February 19, 2017

Homework Help: Physics- HELP

Posted by Amm on Wednesday, December 1, 2010 at 7:26pm.

How to find average speed with a given initial speed, theta, and delta x?
I know average speed= total distance/total time, but I am given an initial speed, an angle and delta x.

Mark throws a ball to Daniel with an initial speed of 20 m/s at an angle of 45 degrees. If they are initially 55 m apart, calculate the average speed Daniel has to run to catch the ball.

the answer is: 4.9 m/s

but how would I go about solving this?? Help, I'm stuck.

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