Homework Help: Science

Posted by Kushagra on Friday, February 10, 2012 at 12:56pm.

During a football match, the ball shot towards the goal struck the defender's foot at the speed of 10m/s and it bounced back at 20m/s. If the time of impact was 0.2 sec, and mass of the ball 0.5 kg,then find the average force exerted by defender on the ball.

Science - Henry, Sunday, February 12, 2012 at 6:46am
a = Vf-Vo)/t,
a = (--20-10) / 0.2 = -150 m/s^2 in
opposite direction.

F = ma = 0.5 * (-150) = -75 N. = opposing force.

Answer this Question

Related Questions

Physics - 3. It’s fourth down in the big football game, and the game is ...
Physics - a barefoot field-goal kicker imparts a speed of 30 m/s to a football ...
PHYSICS - In a football game a kicker attempts a field goal. The ball remains in...
physics - In a football game a kicker attempts a field goal. The ball remains in...
Physics - A football punter accelerates a football from rest to a speed of 9.1 m...
Physics - A football punter accelerates a football from rest to a speed of 9.1 m...
Physics - A football punter accelerates a football from rest to a speed of 9.1 m...
physics - A football punter accelerates a football from rest to a speed of 9 m/s...
physics - a football punter accelerates a football from rest to a speed of 7 m/s...
physics - A football punter accelerates a football from rest to a speed of 8 m/s...

For Further Reading

First Name:
School Subject:
Answer: