Question

A car accelerates uniformily from 25 m/s to 75 m/s

in 5 secs. Find the acceleration of the car.The distance covered by the car in that time.​

Answer 1

Answer:

Explanation:

Given parameters

Time taken (t) = 5 sec

Initial velocity (u) =18 km/hour

 

u=18×100060×60s

 

u = 5 m/s

Final velocity (v) =36km/hour

 

v=36×100060×60s

 

v =10 m/s

We need to calculate acceleration and distance traveled

We know that

acceleration a = (v – u)/t

Substituting the given values in the above equation we get,

a = (10 – 5)/5

a =5/5

a = 1 m/s2

We know that distance travelled is calculated by the formula

Distance travelled S = u t + (1/2) a × t2

Substituting the given values in the above equation we get,

S = 5 × 5 + (1/2) × 1 × 52

S = 25 + (1/2) × 25

S = 25 + 12.5

S = 37.5 m

Hence

acceleration a =1 m/s2

Distance travelled  S =37.5 m

Answer 2

Answer:

as we get to know from the question ,

Explanation:

v = 75

u = 25

a = (v - u)/ t

= (75-25)/5

= 10 m/s^2

by newtons equation,

v^2 - u^2 = 2as

75*75 - 25*25 = 2*10*s

we get , s = 250 m