Momentum Review

Which of the following has the MOST momentum?

• rolling ping-pong ball

• rolling bowling ball

• rolling soccer ball

• rolling basketball

Which object has more momentum?

• Baseball in the pitchers hand

• baseball, lost, in a messy room

• baseball in flight

• baseball in a catchers mitt

If an object has a momentum of 40 kgm/s and a mass of 60 kg, what is it's velocity?

• 2400 m/s

• 1.5 m/s

• 240 m/s

• .67 m/s

If an object has a mass of 20 kg and a velocity of 4 m/s, what is the momentum of the object?

• 80 kgm/s

• 4 kgm/s

• 5 kgm/s

• .2 kgm/s

Most modern vehicles have padded dashboards. This reduces collision injuries by...

• reducing the driver's change in momentum
• increasing the driver's change in momentum
• increasing the force of impact
• increasing the time of impact

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...

• Skater 1 experiences a greater change in momentum

• Skater 2 experiences a greater change in momentum

• Skater 1 has a greater speed than Skater 2

• Skater 1 experiences a greater force

Parkour Peter bends his knees upon landing in order to ____

• reduce his change in momentum
• increase his change in momentum
• increasing his landing time
• increasing his landing force

Both students experience the same ____

• force of impact
• time of impact
• change in momentum
• all of the above

In any collision (crash) the ______ is ALWAYS constant

• Total Momentum
• total speed
• total Velocity
• Energy

A 9 kg blob moving at 5 m/s collides and sticks to a second blob with a mass of 5 kg. If the two blobs stick together, what will the velocity of the two blobs move at?

• 3.57 m/s

• 3.2 m/s

• 10.0 m/s

• 9.0 m/s