Purchase Solution

Force and energy

Not what you're looking for?

Ask Custom Question

It is not uncommon during the service of a professional tennis player for the racket to exert an average force of 156.0 N on the ball. If the ball has a mass of 0.070 kg and is in contact with the strings of the racket for 0.030 s, what is the kinetic energy of the ball as it leaves the racket? Assume that the ball starts from rest. Assume that air resistance is negligible.
__ J

An archer puts a 0.25 kg arrow to the bowstring. An average force of 187 N is exerted to draw the string back 1.3 m. Assume that air resistance is negligible.

(a) Assuming that all the energy goes into the arrow, with what speed does the arrow leave the bow?
m/s
(b) If the arrow is shot straight up, how high does it rise?
m

Purchase this Solution

Solution Summary

The problem illustrates the relation between force and energy conversion.

Solution Preview

1. The problem is based on the second law of Newton.
We have .
- Force acting =156 N
Mass of the ball=0.07 kg
is the acceleration of the ball =
The velocity of the ball after ...

Purchase this Solution


Free BrainMass Quizzes
Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

The Moon

Test your knowledge of moon phases and movement.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.