.
Vary the force acting on the object and the mass of the object at the same time
Vary the mass of the object, but not the force acting on the object
Vary the force acting on the object, but not the object’s mass
Keep both the force acting on the object and the mass of the object constant as it rolls along a horizontal surface
The 2 kg block hits the ground first because it has no horizontal velocity
The 6 kg ball hits the ground first because it is round
The 6 kg ball hits the ground first because it has more mass
The block and the ball hit the ground at the same time because they have the same vertical acceleration
False because books do not attract objects
False because Earth is much larger than the book
True because the book has more inertia than Earth
True due to Newton’s third law of motion
Image a is correct
Image b is correct
Image c is correct
Image d is correct
The cart will slow down as it runs out of forward force
The cart will continue to roll with constant speed
The cart will continue to roll with constant speed only if it is rolling downhill
The cart will slow down as it uses up its speed
A 0.001 kg bumblebee traveling at 2 m/s
A 0.1 kg baseball traveling at 20 m/s
A 5 kg bowling ball traveling at 3 m/s
A 10 kg tricycle at rest
The 60 kg student because he can pull harder than the 70 kg student
The 70 kg student because he can pull harder than the 60 kg student
The 60 kg student because he experiences greater frictional force with the floor
The 70 kg student because he experiences a greater frictional force with the floor
10 m/s
20 m/s
30 m/s
45 m/s
Continue moving with constant speed
Slow down and stop
Change the direction of its motion
Either speed up or slow down
No force is needed for the ball to keep moving at a constant speed
The force from the foot continues to push the ball forward, but eventually runs out
There is a force of motion that keeps the ball going