10 Questions
| Total Attempts: 445

Questions and Answers

- 1.A student wants to set up an experiment to determine the effect of a net force on an object’s acceleration. To do this, she should
- A.
Vary the force acting on the object and the mass of the object at the same time

- B.
Vary the mass of the object, but not the force acting on the object

- C.
Vary the force acting on the object, but not the object’s mass

- D.
Keep both the force acting on the object and the mass of the object constant as it rolls along a horizontal surface

- 2.A 2 kg block is dropped from the roof of a tall building at the same time a 6 kg ball is thrown horizontally from the same height. Which statement best describes the motion of the block and the motion of the ball?
- A.
The 2 kg block hits the ground first because it has no horizontal velocity

- B.
The 6 kg ball hits the ground first because it is round

- C.
The 6 kg ball hits the ground first because it has more mass

- D.
The block and the ball hit the ground at the same time because they have the same vertical acceleration

- 3.A student is holding a book that has a weight of 20N in her hand while sitting in a chair. She claims that the book must be attracting Earth with a force of 20 N. Her claim must be
- A.
False because books do not attract objects

- B.
False because Earth is much larger than the book

- C.
True because the book has more inertia than Earth

- D.
True due to Newton’s third law of motion

- 4.Which diagram of a 5 kg mass resting on a table correctly represents the
__force__(not mass!) of the table on the mass?- A.
Image a is correct

- B.
Image b is correct

- C.
Image c is correct

- D.
Image d is correct

- 5.A cart is rolling along a frictionless horizontal surface. Which of the following describes the motion of the cart as it continues to roll along the surface?
- A.
The cart will slow down as it runs out of forward force

- B.
The cart will continue to roll with constant speed

- C.
The cart will continue to roll with constant speed only if it is rolling downhill

- D.
The cart will slow down as it uses up its speed

- 6.Which object has the most inertia?
- A.
A 0.001 kg bumblebee traveling at 2 m/s

- B.
A 0.1 kg baseball traveling at 20 m/s

- C.
A 5 kg bowling ball traveling at 3 m/s

- D.
A 10 kg tricycle at rest

- 7.Two students have a tug-of-war on a smooth gym floor. One student has a mass of 70 kg and is wearing socks but no shoes. The other student has a mass of 60 kg and is wearing athletic shoes. The student most likely to win will be
- A.
The 60 kg student because he can pull harder than the 70 kg student

- B.
The 70 kg student because he can pull harder than the 60 kg student

- C.
The 60 kg student because he experiences greater frictional force with the floor

- D.
The 70 kg student because he experiences a greater frictional force with the floor

- 8.A stone with an initial velocity of zero is dropped from a bridge above a river. After 3 s, the stone strikes the water below the bridge. Approximately how fast is the stone traveling when it strikes the water?
- A.
10 m/s

- B.
20 m/s

- C.
30 m/s

- D.
45 m/s

- 9.If the sum of all forces acting on a moving object is zero, the object will
- A.
Continue moving with constant speed

- B.
Slow down and stop

- C.
Change the direction of its motion

- D.
Either speed up or slow down

- 10.A soccer ball is kicked across a field. After it is no longer touching the player's foot, the ball continues to move because
- A.
No force is needed for the ball to keep moving at a constant speed

- B.
The force from the foot continues to push the ball forward, but eventually runs out

- C.
There is a force of motion that keeps the ball going