Pre Test Projectile Motion, impulse and momentum

Which of the following is an example of projectile motion?

• A car traveling on a straight road

• A rock thrown into a lake

• A book sliding on a table

• A person walking on a treadmill

What is the formula for the impulse-momentum theorem?

• F = ma

• P = mv

• J = Ft

• E = mc^2

Which of the following is an example of a non-conservative force?

• Gravity

• Friction

• Elastic force

• Tension force

If a 2 kg object is traveling at 5 m/s and experiences an impulse of 10 Ns, what is its final velocity?

• 0 m/s

• 5 m/s

• 10 m/s

• 15 m/s

Pick all of the scenarios that are explosions.

• A cannon fires a cannon ball.

• A spoon is shoved into a jar of peanut butter.

• A linebacker tackles a member of the opposite team.

• A swimmer jumps off a floating raft.

• A figure skater throws a heavy ball.

Pick all of the scenarios below that are collisions.

• A catcher catches a baseball.

• A pitcher throws a baseball.

• Two cars smash into each other.

• Two students on roller skates push away from each other.

• A bug smashes into a windshield.

Which of the 0.5kg spheres in the image experiences the greater impulse?

• Black

• White

• Same

• Not Enough Info

Which of the 0.5kg spheres in the image experiences the greater change in momentum?

• Black

• White

• Same

• Not Enough Info

After collision, the two objects move off with different velocity. What type of collision is this?

• Inelastic

• Elastic

Which cart in the image experiences a greater impulse?

• E

• F

• Same

• Not enough info