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3 years ago

A car has a force of 2000N and a mass of 1000kg. What is the acceleration

Physics

1 answer:

Anastaziya [24]3 years ago

6 0

Answer:

2m/s/s

Explanation:

The formula goes- F=MA

F-Force M-Mass & A-Acceleration

We need to rearrange this formula to find the acceleration-

A=F/M

All we need to do now is substitute the values in

A=2000N/1000kg

A=2m/s^2

In the given option the last option (2m/s/s) would be the ans, as it's the same as 2m/s^2

So ya, I guess that's all

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3 years ago

A computational model predicts the speed of a roller coaster car at different heights given its speed at the lowest height of it

s2008m [1.1K]

Answer:

the answers, the correct one is A v= 22.5 m/s

Explanation:

We can solve this problem using the concepts of conservation of mechanical energy

Starting point. Lowest point of the trajectory

Em₀ = K = ½ m v₀²

Final point. When it is at a height of y = 20 m

$Em_{f}$ = K + U = ½ m v² + mg y

how energy is conserved

Emo = Emf

½ m v₀² = ½ m v² + m g y

v² = v₀² + 2 g y

let's calculate

v²2 = 30 2 + 2 9.8 20

v² = 508

v²= ra 508

v² = 22.54 m / s

When checking the answers, the correct one is A

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3 years ago