Chapter 3 Force and motion

Front

What is the equation to calculate momentum?

Back

p = m x v

Front

At which point did the parachutist open the parachute if the graph shows their vertical speed?

Back

Point A

Front

What is the net force just after a parachutist jumps out of the plane (before the parachute opens)?

Back

Downward

Front

Which object has the MOST momentum if they are all rolling at the same velocity?

Back

Rolling bowling ball

Front

If a 9300 kg railroad car traveling at 5 m/s strikes a 5000 kg boxcar at rest, what speed will the second boxcar move after the collision?

Back

9.3 m/s

Front

Define momentum in physics.

Back

Momentum is the product of an object's mass and its velocity (p = m x v).

Front

What is the unit of momentum?

Back

Kilogram meter per second (kg·m/s).

Front

Explain the concept of net force.

Back

Net force is the total force acting on an object, taking into account all the individual forces acting on it.

Front

What happens to the net force when an object is in free fall?

Back

The net force is equal to the weight of the object, acting downward.

Front

What is the relationship between mass and momentum?

Back

Momentum increases with an increase in mass if velocity remains constant.