Physics Question about Velocity, Displacement, etc.?

Question

A car starts from rest and is given a constant acceleration of 10m/s2 for a total time of 5 seconds.

a.) Find the velocity at the end of 5 seconds?

b.) How far does it go during the first second?

c.) What is the displacement after 5 seconds?

Note: With Formula plss.Thanks.

Answer 1

(a) v = at = 10(5) = 50 m/s

(b) s = (1/2)at^2 = (1/2)(10)(1^2) = 5 meters

(c) s= (1/2)at^2 = (1/2)(10)(5^2) = 125 meters

Answer 2

10m/sec*2 for 5 seconds.

This mean that the car travels at 10 metres per second every second.

First second -- 10 m

2nd        "          20 m(It accelerates 10 m more in the second second, and the third, etc.)

3rd         "          30 m

4th          "          40 m

5th          "          50 m

After 5 seconds it will have travelled 150 metres, the sum of the seconds' acceleration.

Calculus has the answer for you by formula:

                          10 m/sec*2 for 5 secs

                       = 5 x 2 x 10 m/sec

                       = 100 m /sec.

My results are not eaual. You can crrect something for me.

You'll get to know how to do the subject by this correction. Good on you.

Answer 3

Formula; V2=V1+at  

the newtons first eqn of motion

put values for answer

V2=final velocity

V1=initial velocity

a=acceleration

t=time duration