You are speeding your 1500 kg truck down Ferguson on a Friday night at 28 m/s. You see a squirrel in the road 100 m away and slam on the brakes to avoid hitting it. The brakes plus the road friction generate 5000 N of force on the car. How far will your car skid before it stops? Do you hit the squirrel?
20 points
20
Question 2
2.
If you were driving slower like a responsible teen,18 m/s, what is your new stopping distance? How would that have changed the outcome?
20 points
20
Question 3
3.
Use your answers to #1 and #2 to answer: Why is it a good idea to drive the speed limit according to Physics?
20 points
20
Question 4
4.
A bullet with a mass of 0.010 kg is fired from rest in a rifle with a barrel that is 0.65 m long. The force exerted by the expanding gas is a constant 5500 N. Determine the speed that the bullet would have at the end of the barrel.
20 points
20
Question 5
5.
A 60 kg diver falls from the 6 meter platform at UT's swimming complex into the pool below. Calculate
the diver’s velocity at impact. (number only rounded to nearest tenth ex: 7.2)
10 points
10
Question 6
6.
Someone wearing skates on a horizontal surface is pushed by a friend with a constant force of 55 N. How far must the student be pushed, starting from rest, so that her final kinetic energy is 352 J?