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ahrayia [7]
2 years ago
15

a car with mass 1400kg has a net forward force of 4500N applied to it. the car starts from rest and travels down a horizontal hi

ghway. if travelled 100m what is it velocity​
Physics
1 answer:
belka [17]2 years ago
6 0

Answer:

25.3m/s

Explanation:

F=ma

F is 4500, M is 1400kg, A is ?

4500=1400×a

a=4500/1400

a=3.2m/s²

then equation of motion

V²=U²+2as

V=?,U=0, a=3.2,s=100m

V²=0+2×3.2×100

V²=640

  • square both side

V=√640

V= 25.3m/s

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1. What is the kinetic energy of a 1.75 kg ball travelling at a speed of 54 m/s?
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We conclude that the kinetic energy of a 1.75 kg ball traveling at a speed of 54 m/s is 2551.5 J.

Explanation:

Given

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To determine

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We know that a body can possess energy due to its movement — Kinetic Energy.

Kinetic Energy (K.E) can be determined using the formula

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now substituting m = 1.75, and v = 54 in the formula

K.E=\frac{1}{2}mv^2

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Therefore, the kinetic energy of a 1.75 kg ball traveling at a speed of 54 m/s is 2551.5 J.

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