Question

Find a value of 3a+4b when a=17 and b=9. Then use the formula v=u+at when the initial velocity is 3 m/s, the acceleration is 1.5m/s squared and the time is 7 seconds.

Answer 1

the velocity is v= 13.5m/s.

a) The value of

b) The velocity is .

Explanation:

Part a

Given:

and

Find the value of given expression =

Put a, b value in given expression

The value of

Part b

Given:

the initial velocity is

the acceleration is

the time is seconds

The given formula to find the velocity.

where ,

u = initial velocity

t = time

Put all the value in given velocity formula

hope this helped