Question

A baseball pitcher throws a baseball with a speed of 45 m/s . In throwing the baseball, the pitcher accelerates the ball through a displacement of about 3.5 m, from behind the body to the point where it is released as shown in (Figure 1) . Estimate the average acceleration of the ball during the throwing motion. Express your answer using two significant figures.

Answer 1

apply

V^2 = U^2 +2as

45^2 = 0+2*a*3.5

a = 289.28 m/sec^2

Answer 2

If the time is 3.5 ( s ) then the Average acceleration will be : 14.29 m2/s