1 In the diagram right, a force,F, is applied to the handle of a lawnmower inclined at angle to the ground. The magnitude of the horizontal component of forceF depends on (1) the magnitude of forceF, only (2) the measure of angle , only (3) both the magnitude of forceF and the measure of angle (4) neither the magnitude of force F nor the measure of angle 2 The vector right represents the resultant of two forces acting concurrently on an object at pointP. Which p air of v ectors best represents two concurrent forces that combine to produce this resultant force vector? 3 Equilibrium exists in a system where three forces are acting concurrently on an object. If the system includes a 5.0-newton force due north and a 2.0-newton force due south, the third force must be (1) 7.0 N south (3) 3.0 N south (2) 7.0 N north (4) 3.0 N north 4 The diagram below shows a block on a horizontal frictionless surface. A 100.-newton force acts on the block at an angle of 30.° above the horizontal. What is the ma gnitude of force F if it establishes equilibrium ? (1) 50.0 N (3) 100. N (2) 86.6 N (4) 187 N Vectors & Forces #1 Name: _________________________ 00, 01 bothdate:
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1 In the diagram right, a force, F , is applied to the handle of a lawnmower
inclined at angle to the ground. The magnitude of the horizontal
component of force F depends on
(1) the magnitude of force F , only
(2) the measure of angle , only(3) both the magnitude of force F and the measure of angle
(4) neither the magnitude of force F nor the measure of angle
2 The vector right represents the resultant of two forces actingconcurrently on an object at point P . Which pair of vectors best
represents two concurrent forces that combine to produce this
resultant force vector?
3 Equilibrium exists in a system where threeforces are acting concurrently on an object. If
the system includes a 5.0-newton force due
north and a 2.0-newton force due south, thethird force must be
(1) 7.0 N south (3) 3.0 N south
(2) 7.0 N north (4) 3.0 N north
4 The diagram below shows a block on a horizontal frictionlesssurface. A 100.-newton force acts on the block at an angle of30.° above the horizontal. What is the magnitude of force F if it
5 Compared to 8 kilograms of feathers, 6 kilograms of lead has1 less mass and less inertia 3 more mass and less inertia2 less mass and more inertia 4 more mass and more inertia
6 Two forces are applied to a 2.0-kilogram block on a
frictionless horizontal surface, as shown in the diagram right.The acceleration of the block is(1) 1.5 m/s2
to the right(2) 2.5 m/s2
to the left
(3) 2.5 m/s2 to the right(4) 4.0 m/s2
to the left
7 A 5-newton force directed east and a 5-newtonforce directed north act concurrently on a point.
The resultant of the two forces is
(1) 5 N northeast (3) 7 N northeast(2) 10. N southwest (4) 7 N southwest
8 A 2.0-kilogram mass weighs 10. newtons on
planet X . The acceleration due to gravity on planet X is approximately(1) 0.20 m/s2 (3) 9.8 m/s2
(2) 5.0 m/s2 (4) 20. m/s2
9 The graph below represents the relationship between theforces applied to an object and the corresponding accelerations
produced. What is the inertial mass of the object?(1) 1.0 kg (3) 0.50 kg
(2) 2.0 kg (4) 1.5 kg
10 A wooden block is at rest on a horizontal steel
surface. If a 10.-newton force applied parallel to
the surface is required to set the block in motion,how much force is required to keep the blockmoving at constant velocity?
(1) less than 10. N(2) greater than 10. N
(3) 10. N
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11 Two students push on a sled. One pushes with a force of 30.newtons east and the other exerts a force of 40. newtons south, asshown in the topview diagram below. Which vector best represents
the resultant of these two forces?
12 An astronaut weighs 500 newtons on Earth and
4 An astronaut weighs 500 newtons on Earth and25 newtons on asteroid X . The acceleration due
to gravity on asteroid X is approximately(1) 1 m/s2
(3) 0.2 m/s2
(2) 2 m/s2 (4) 0.5 m/s2
13 A series of unbalanced forces was
applied to each of two blocks, A and B.The graphs below show the relationship between unbalanced force and
acceleration for each block. Compared
to the mass of block A, the mass of block B is
(1) the same(2) half as great
(3) twice as great
(4) four times as great
14 A 50.-newton horizontal force is needed to keepan object weighing 500. newtons moving at a
constant velocity of 2.0 meters per second across
a horizontal surface. The magnitude of the frictionalforce acting on the object is(1) 500. N (3) 50. N(2) 450. N (4) 0 N
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15 The diagram right represents a block sliding down an incline.Which vector best represents the frictional force acting on the block?(1) A (3) C(2) B (4) D
16 A different force is applied to each of four 1-kilogram blocks to slide them across a uniform steelsurface at constant speed as shown below. In which diagram is the coefficient of friction between the block and steel smallest ?
17 A mosquito flying over a highway strikes the windshield of a moving truck. Compared to themagnitude of the force of the truck on the mosquito during the collision, the magnitude of theforce of the mosquito on the truck is
(1) smaller(2) larger
(3) the same
13 A 15-kilogram mass weighs 60. newtons on
planet X . The mass is allowed to fall freely from
rest near the surface of the planet. After fallingfor 6.0 seconds, the acceleration of the mass is
5 Compared to 8 kilograms of feathers, 6 kilograms of lead has1 less mass and less inertia 3 more mass and less inertia2 less mass and more inertia 4 more mass and more inertia
6 Two forces are applied to a 2.0-kilogram block on a
frictionless horizontal surface, as shown in the diagram right.
The acceleration of the block is(1) 1.5 m/s2
to the right
(2) 2.5 m/s2 to the left
(3) 2.5 m/s2 to the right(4) 4.0 m/s2
to the left
7 A 5-newton force directed east and a 5-newton
force directed north act concurrently on a point.
The resultant of the two forces is(1) 5 N northeast (3) 7 N northeast
(2) 10. N southwest (4) 7 N southwest
8 A 2.0-kilogram mass weighs 10. newtons on planet X . The acceleration due to gravity on
planet X is approximately(1) 0.20 m/s2 (3) 9.8 m/s2
(2) 5.0 m/s2 (4) 20. m/s2
9 The graph below represents the relationship between the
forces applied to an object and the corresponding accelerations produced. What is the inertial mass of the object?
(1) 1.0 kg (3) 0.50 kg
(2) 2.0 kg (4) 1.5 kg
10 A wooden block is at rest on a horizontal steel
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surface. If a 10.-newton force applied parallel tothe surface is required to set the block in motion,how much force is required to keep the block
moving at constant velocity?
(1) less than 10. N
(2) greater than 10. N
(3) 10. N
11 Two students push on a sled. One pushes with a force of 30.newtons east and the other exerts a force of 40. newtons south, as
shown in the topview diagram below. Which vector best represents
the resultant of these two forces?4
12 An astronaut weighs 500 newtons on Earth and4 An astronaut weighs 500 newtons on Earth and
25 newtons on asteroid X . The acceleration dueto gravity on asteroid X is approximately(1) 1 m/s2
(3) 0.2 m/s2
(2) 2 m/s2 (4) 0.5 m/s2
13 A series of unbalanced forces wasapplied to each of two blocks, A and B.The graphs below show the relationship between unbalanced force and
acceleration for each block. Compared
to the mass of block A, the mass of block B is
(1) the same
(2) half as great
(3) twice as great (4) four times as great
14 A 50.-newton horizontal force is needed to keep
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an object weighing 500. newtons moving at aconstant velocity of 2.0 meters per second acrossa horizontal surface. The magnitude of the frictional
force acting on the object is(1) 500. N (3) 50. N
(2) 450. N (4) 0 N
15 The diagram right represents a block sliding down an incline.Which vector best represents the frictional force acting on the block?(1) A (3) C(2) B (4) D
16 A different force is applied to each of four 1-kilogram blocks to slide them across a uniform steel
surface at constant speed as shown below. In which diagram is the coefficient of friction between the
block and steel smallest ?2
17 A mosquito flying over a highway strikes the windshield of a moving truck. Compared to themagnitude of the force of the truck on the mosquito during the collision, the magnitude of the
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