April sits at rest on a skateboard. she has a mass of 55 kg. her friend throws her a watermelon (m=2kg) at a speed of 5 m/s. if she catches it, how fast will she, the skateboard, and the watermelon move

Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s

The difference between two numbers is 15. when twice the smaller number is subtracted from three times the larger number, the difference is 58.what is the larger number?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?