PS.5.2.1 (5.P.1.1) #2: Schoolnet

Front

What force must a rocket act against as it moves away from Earth?

Back

Gravity is the force that the rocket must act against to move away from Earth.

Front

What is the best investigation to test the effects of gravity on moving objects?

Back

Dropping pencils from the same height is the best investigation to test the effects of gravity.

Front

Why did the car roll down the wood ramp the fastest?

Back

There was less friction on the surface of the wood ramp.

Front

What force decreases when soap becomes wet?

Back

Friction decreases as the soap becomes wet.

Front

What happens to a ball when Manny kicks it?

Back

The ball will roll toward the east.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

Define gravity.

Back

Gravity is the force that attracts two bodies toward each other, such as the Earth and an object.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object when it is in contact with another surface.

Front

What is momentum?

Back

Momentum is the quantity of motion an object has, which depends on its mass and velocity.

Front

What is the relationship between mass and gravity?

Back

The greater the mass of an object, the stronger the gravitational force it exerts.