Question
1) A crash test dummy with a mass of 65-kg is in a moving car going...
1)
A crash test dummy with a mass of 65-kg is in a moving car going at
20 m/s, until it crashes into a wall. If the applied force was
measured at 1,750 N, how long (in seconds) did the collision last?
2) Consider two hockey pucks on frictionless ice: Puck A with
a mass 1.10 kg, and Puck B with a mass of 0.60 kg.
Puck A is initially moving to the right at 1.75 m/s towards
puck B, which is initially stationary. The pucks collide head
on.
After the collision, puck B moves to the right with a speed of
1.70 m/s.
What is puck A’s velocity (in m/s) after the collision? Round
to the nearest hundredth (0.01) and use sign notation to denote if
it's moving to the right (+) or to the left (-).
3) A 145-gram baseball flies towards a catcher at a speed of
45 m/s. The batter hits the baseball with an average force of 800 N
and the collision time lasts 0.02 seconds, what will the baseball's
speed (in m/s) be after being batted? Round to the nearest
hundredth (0.01).
Homework Answers
Answer #1
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View Available Hint(s)
vAi =
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