Question

If a car starts from rest and attains a velocity of 10 m/s in 5 seconds,calculate the acceleration produced by the car
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Answer 1

Answer:

Explanation:

he driver applies breaks and slows down the car to 5m/s in 10s. Find the acceleration of the car in both the cases.

Answer 2

Answer:

• Acceleration is 2 m/s².

Given:

• Final velocity (v) = 10 m/s
• Time taken (t) = 5 sec

Explanation:

$\rule{300}{1.5}$

Here, we know that the car starts from rest. So, it's initial velocity will be zero.

From first kinematic equation we know,

$\longrightarrow{\sf{v\ =\ u\ +\ at}}$

Substitute the values,

$\longrightarrow{\sf{10\ =\ 0\ +\ a \times 5}} \\ \\ \\ \longrightarrow{\sf{10\ =\ 0\ +\ 5a}} \\ \\ \\ \longrightarrow{\sf{\dfrac{10}{5}\ =\ a}} \\ \\ \\ \longrightarrow{\sf{2\ =\ a}} \\ \\ \\ \longrightarrow{\sf{a\ =\ 2\ m/s^2}}$

∴ The acceleration of the car is 2 m/s².

$\rule{300}{1.5}$