Final

none of the above

A 0.5-kg blob of clay moving at 2.0 m/s slams into a 4.0-kg blob of clay at rest. The speed of the two blobs stuck together after colliding is about

10 times as much force on the heavier block

A 10-N block and a 1-N block lie on a horizontal frictionless table. To push them with equal acceleration, we would have to push with

2 m/s

A 10-kg block is pushed across a friction-free horizontal surface with a horizontal force of 20 N. The acceleration of the block is

1 m/s

A 10-kg block is pushed across a horizontal surface with a horizontal force of 20 N against a friction force of 10 N. The acceleration of the block is

2000 N

A 1000-kg car moving at 10 m/s that brakes to a stop in 5 s has an average braking force of

the same as its initial speed

A ball is thrown upwards and caught when it returns. Neglecting air resistance, the speed with which it is caught is

8.0 N

A boxer punches a sheet of paper in midair from rest to a speed of 40 m/s in 0.05 s. If the mass of the paper is 0.01 kg, the force of the punch on the paper is

no horizontal forces act on it

A projectile is fired horizontally. With no air resistance it maintains its horizontal component of velocity because

50 m/s

A projectile is launched straight upward at 50 m/s. If air resistance is negligible, its speed upon returning to its starting point is

more the gravitational force between them

According to Newton, the closer gravitationally interacting objects are to each other, the

less the gravitational force between them

According to Newton, the greater the distance between gravitationally interacting objects, the

none of the above. (20 m/s)

At the end of two seconds of free fall, an object released from rest will have a speed of

one; the force due to gravity

How many forces act on an upwardly tossed coin when it gets to the top of its path?

at rest, moving at constant nonzero velocity, in mechanical equilibrium.

If a non-rotating object has no acceleration, then we can say for certain that it is

acceleration

If the mass of an object does not change, a constant net force on the object produces constant

decrease

If the radius of the Earth somehow increased with no change in mass, your weight would

20 m/s

If you toss a ball straight upward at 40 m/s with no air resistance, 6 seconds later its speed is

weight

Inside a freely falling elevator you would experience no

exactly below the midpoint of the ceiling

Inside the interior of a truck that moves at constant velocity is a package that drops from the midpoint of the ceiling. The package hits the floor

is only the force due to gravity, always directed downward

Neglecting air resistance, after a ball leaves your hand when you toss it upward, the force on it

5 m/s

One-half second after starting from rest, a freely falling object will have a speed of about

10 N

Place a book that weighs 10 N on a horizontal surface and the support force on the book is

The same as before

Recoil is noticeable if we throw a heavy ball while standing on a skateboard. If instead we go through the throwing motion but hold onto the ball, without friction effects our net recoil will be

10 N

The force of friction on a sliding object is 10 N. The applied force needed to maintain a constant velocity is

solids, liquids and gasses

The resistive force of friction occurs for

decreases

When bullets are fired from an airplane in the forward direction of motion, the momentum of the airplane

decrease by one-quarter

When the distance between two stars doubles, the force between them

the left

When you push your desk to the right, friction on the desk acts toward

add to equal your weight

When you stand at rest on a pair of bathroom scales, the readings on the scales will always

downward and constant

When you toss a coin straight up, it moves upward, turns around, and drops. During this time the acceleration of the coin is