A 57 g tennis ball is served at 45 m/s. If the ball started from rest, what impulse was applied to the ball by the racket

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

Ajogger runs 5.0 km on a straight trail

10 application of ultra sound waves?