Question

Quick Physics questions please help!A book is given a sudden push to make it slide along a desktop. If the initial speed of the slide is doubled, by what factor is the distance that the book slides changed?

A 20 kg cart is moving at 2.0 m/s when a 5.0 N force is applied for a distance of 6.0 m in the direction the car is moving. What is the kinetic energy of the cart at the end of the 6.0 m?

A 0.145 kg baseball is thrown from a platform above the ground at a 10 m/s. The ball is moving 15 m/s when it strikes the ground. From what height above the ground was the ball thrown?

Answer 1

@UnknownRandom

Answer 2

options for first question
0.5

0.25

2.0

4.0

Answer 3

2.0? @UnknownRandom ?

Answer 4

I don't have enough brain power tonight to do the 2nd and 3rd one. I need a few more seconds to think about that 1st one.

Answer 5

I'm guessing it would be doubled because there are no other variables given.

Answer 6

ok so what would it be?

Answer 7

@UnknownRandom

Answer 8

please?

Answer 9

nothing?

Answer 10

The answer to the first question is four.

Answer 11

2. The answer for two is 70 J

Answer 12

The answer for three is 6