.
The car must slow down.
Gravity must act on the car.
The mass of the car must change.
Another force must act on the car.
Its speed is decreasing.
Its speed is increasing.
Its speed cannot be measured.
Its speed is remaining constant.
The mass and volume of the object
The shape of the object and the distance it moved
the mass of the object and the time it took to move
The distance moved by the object and the time it took to move
The lighter car will travel a longer distance because it has more mass.
The heavier car will travel a shorter distance because it has more mass.
The lighter car will travel a shorter distance because its wheels will roll more quickly.
The heavier car will travel a longer distance because its wheels will roll more slowly.
mass
friction
Gravity
Momentum
Mass
Gravity
friction
air resistance
Jack and Trish used no force.
Jack and Trish used equal force.
Jack exerted less force than Trish.
Jack exerted more force than Trish.
As the rate of friction increases, the rate of movement increases.
As the rate of friction increases, the rate of movement decreases.
As the rate of friction decreases, the rate of movement decreases.
As the rate of friction decreases, the rate of movement is unchanged.
if there is no friction acting on the toy
If there is no gravity acting on the toy
if the dogs keep pulling with the same amount of force
if one dog begins pulling with a greater amount of force
30 miles per hour
50 miles per hour
75 miles per hour
150 miles per hour
The large rock would cause more damage because the force would be spread out on a larger area.
The large rock would cause more damage because it has a greater mass, making the momentum greater.
The small rock would cause more damage because it has a smaller mass, making the momentum greater.
The small rock would cause more damage because all of the force would be concentrated on one small area.
25 miles per hour
50 miles per hour
75 miles per hour
100 miles per hour
It was moving at a faster speed during the first hour.
It was moving at a faster speed during the second hour.
It was moving at the same average speed for the two hours.
The airplane stopped moving between the first and second hours.
2 seconds
4 seconds
6 seconds
8 seconds
2 minutes
4 minutes
6 minutes
8 minutes