Question

solve this very important ​

Answer 1

Question:

A car starting from rest moves high 54 km/hr in 2 minutes. Calculate its acceleration.

Answer:

Acceleration = 0.125 m/s²

Explanation:

Given:

• Initial velocity = 0
• Final velocity = 54 km/hr
• Time = 2 minutes = 120 seconds

To find:

Acceleration = ?

Formula used:

★ a = (v - u) ÷ t

where:

• a = acceleration
• v = Final velocity
• u = Initial velocity
• t = time

Solution:

First, convert speed into m/s

54 km/hr

= 54 × 5/18

= 15 m/s

Now, apply the formula.

a = (v - u) ÷ t

⇒ a = (15 - 0) ÷ 120

⇒ a = 0.125 m/s²

∴ Acceleration of car = 0.125 m/s²

Answer 2

QUESTION:-

A car starting from rest moves high 54 km/hr in 2 minutes. Calculate its acceleration.

EXPLANATION:-

Initial velocity = 0 (BODY STARTS FROM REST)

Final velocity = 54 km/hr=54×5/18=15 m/s

Time = 2 minutes = 120 seconds

a = (v - u) / t

where:

a = acceleration

v = Final velocity

u = Initial velocity

t = time

So let's put the data of the question to find acceleration:-

a=(15-0)/120

a=0.125 m/s²

So the acceleration is 0.125 m/s²

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