Question

Calculate the force required to impact to car a velocity of 30m/s in 10 sec starting from rest.The mass of the car is 1500 kg.​

Answer 1

Hello❤!!

Here, Mass,m=1500kg

Initial Velocity =0

Final Velocity=30m/a

Time=10s

Now putting values in equation:

v=u+at

30=0+a×10

10a=30

a=30/10m/s^2

A=3m/s^2

Now,putting m=1500kg and a=3m/s^2

F=m×a

F=1500×3N

4500N.

Thus,The force required in this case is 4500 newtons.

Answer 2

Explanation:

★ KINEMATICS

★ GIVEN ;

» Mass of Car = 1500 Kg

» Velocity of Car = 30 m / s

» Time Period = 10 sec.

★ ACCELERATION = ???

★ FORCE = ???

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★ BY USING EQUATION OF MOTION ;

★ V = U + at

» V = 0 + a t

» a = V / t = 30 / 10 = 3 m / s²

★ Acceleration = 3 m / s² ★

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★ FORCE ( F ) = mass (m) • Acceleration ( a ) ★

★ F = m × a

» F = m × 3

» F = 1500 × 3 = 4500 Newton

★ FORCE = 4500 NEWTON ★

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