Question

A car starting from rest has a uniform acceleration of 5m/s. What is its velocity after 4 seconds? If the acceleration there after is zero, then find the velocity of the body at the end of 6 seconds​

Answer 1

Answer:

Your answer is 20 m/s

Explanation:

$\huge \red{answer}$

A car is starting from rest, therefore,

Given :- Initial velocity, u = 0 m/s

Acceleration, a = 5 m/s²

Time, t = 4s

Final velocity, v = ?

Using first equation of motion :-

v = u + at

On substitution values, we get,

v = (0) + (5) (4)

v = 5 × 4

v = 20 m/s

Velocity after end of 6s

Given :- Initial velocity, u = 0 m/s

Acceleration, a = 0 m/s

Time, t = 6s

Final velocity, v = ?

If the acceleration is zero then the car is in rest

car does not move in 6s .

Therefore, answer is 20 m/s

$\huge \mathfrak \red { hope it will help you }$