A police car takes off from rest, reaching a speed of 88.5 mph in 4.63 seconds. ?

Question

What is the avg. acceleration? I am really horrible at physics so please help me. thank you!

Answer 1

Bull ****. No police car I know goes that fast.

But to help you with your physics, You can use the fomula

v/t=acceleration.  Acc is the change rate of velocity.

88.5 mph is 129.8 feet per second.

129.8/4.63 is 28.03 feet per second per second.

Gravity on earths surface is 32 feet per second per second.

So you will experience an average of 28.03/32 gee or .87 gee, which corresponds to most sport tire grip.

Answer 2

V=88.5m/h>m/s is 88.5/(60*60)   V=0.0245m/s,t=4.63s a=?

V=u+at  0.0234/4.63=a  a=0.005m/s^2

but this answer still is too small for an acceleration.

Answer 3

88.5 mph= 39.55458333m/s

a= (Vo-Vf)/t

=  (0-39.5546m/s)/4.63s

a=8.54m/s2