physics chapter 4 and 5

an apple weights 1 n at rest on your head, the net force is

0

when a falling object has reached its terminal velocity, its acceleration is

0

a 1 kg mass at the earths surface weighs

10 n

the mass of a lamb that weighs 110 n is about

11 kg

a tow truck exerts a fore of 3000n on a car, which then accelerates at 2 m/s. what is the mass of the car

1500

a car has a mass of 1000 kg and accelerates 2 m/s what is the force exerted

2000

action and reaction pairs of forces

act simultaneously.

when a skateboarder pushes on a wall

all the above

an archer shoot an arrow. consider the action force to the bowstring against the arrow. the reaction to this force is the

arrows push against the bow

the force with which earth pulls not he moon is

equal in magnitude to the force that moons pulls on earth

when you drop a rubber ball on the floor it bounces back. the force exerted on the ball to produce bouncing is by the

floor

if an objects mass is decreasing while a constant force is applied to the object, the acceleration

increases

an object with twice as much mass as another object has twice as much

inertia

for every action force there must be a reaction force that

is equal in magnitude

when you walk you push on the floor to the left and the floor

pushes you to the right

a force of 1 n accelerates 1 kg box at the rate of 1 m/s. the acceleration of a 2 kg box by a net force of 2 n is

the same

compared to the mass of an apple on earth, the mass of the apple on the moon is

the same

you cannot exert a force on a wall

unless the wall simultaneously exerts the same amount of force on you