Question

A car start from rest and under of constant acceleration pole it acquires a velocity of 5 metre per second in 5 seconds if the mass of the car and passenger Be 1800 kg calculate the magnitude of force

Answer 1

Answer:

1800N (newton)

This is the force

Answer 2

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★ Sᴏʟᴜᴛɪᴏɴ :-

Given ,

• Car is starting from rest
• Final velocity = 5 m/s
• Time taken = 5s
• Mass of car & passenger = 1800 kg

To find ,

• Force = ?

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To find , force acting on the body firstly we should find the acceleration using the first equation of motion .

v = u + at

Where,

• v → final velocity = 5m/s
• u → initial velocity = 0 m/s
• t → time taken = 5 s
• a → acceleration = ?

Substituting the values we have ,

➺ 5 = 0 + a(5)

➺ 5 = 5a

➺ a = 5 ÷ 5

➺ Acceleration = 1 m/s²

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Now , finding force using Newton's second law of motion.

F = m × a

Where

• F → force = ?
• m → mass = 1800 kg
• a → acceleration = 1 m/s²

Subsituting the values we have

➻ F = 1800 × 1

➻ Force = 1800 N

Hence , force acted of the body = 1800 N

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