Question

A racing car has a uniform acceleration of 4m/s2. What distance will it cover in 10 seconds after the start?

Answer 1

Answer:

200 metres is the required answer.

Step-by-step explanation:

According to the Question

It is given that,

• Acceleration ,a = 4m/s²
• time taken ,t = 10s
• Initial velocity ,u = 0m/s

we need to calculate the distance covered by the car .

Using Kinematics Equation

• s = ut + 1/2at²

where

s is the distance covered

a is the acceleration

u is the initial velocity

t is the time taken

Substitute the value we get

➻ s = 0×10 + 1/2×4 × 10²

➻ s = 0 + 1/2× 4 × 100

➻ s = 0 + 2 × 100

➻ s = 200m

• Hence, the distance covered by the car is 200metres.

Answer 2

Given :-

A racing car has a uniform acceleration of 4m/s²

To Find :-

Distance will it cover in 10 seconds after the start?

Solution :-

Finding final velocity

v = u + at

v = 0 + 4(10)

v = 0 + 40

v = 40 m/s

Now

v² - u² = 2as

(40)² - (0)² = 2(4)(s)

1600 - 0 = 8s

1600 = 8s

1600/8 = s

200 = s

Hence

Distance travelled is 200 m