A 3.5 kg toy dump truck moving with a speed of 1.7 m/s starts up a ramp. How high (h) does the truck roll before it stops?
20 points
20
Question 2
2.
A 2.0-kilogram ball rolling along a flat surface starts up a hill. If the ball reaches a height of 0.93 meters, what was its initial speed?
20 points
20
Question 3
3.
You are on in-line skates at the top of a small hill. Your potential energy is equal to 2,000 J. The last time you checked, your mass was 70.0 kg. If you start rolling down this hill, your potential energy will be converted to kinetic energy. At the bottom of the hill, your kinetic energy will be equal to your potential energy at the top. Calculate your speed at the bottom of the hill. (Number only. Round to the nearest tenth ex: 3.2)
20 points
20
Question 4
4.
A squirrel has 75 joules of kinetic energy and 25 joules of gravitational potential energy at one point during its fall from a fence to the ground. An instant before striking the ground, how much mechanical energy does the squirrel have? (number only)
1 point
1
Question 5
5.
If the PE at point A is 2000 J and the cart's mass is 50kg, find the velocity at point D (halfway up the ramp). What is the best way to solve this problem?
1 point
1
Question 6
6.
A 70 kg skydiver is falling through the sky at 52 m/s. He is currently 680m above the ground. What is the skydiver’s total mechanical energy?