2 years ago

If a toy car covers a distance of 42m in 7sec, what is it’s speed

Engineering

2 answers:

S_A_V [24]2 years ago

6 0

Answer:

6m/s

Explanation:

This is a basic division problem. To solve divide 42 by 7 to find its speed (meters/second).

42/7 is 6.

PSYCHO15rus [73]2 years ago

3 0

Answer: The answer would be 6m/s

Divide how much distance it covers (42m) in 7 seconds.

What we have: 42/7

42 divided by 7 is 6

If you're still not sure, do 6 times 7 to check again

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A heat engine is coupled with a dynamometer. The length of the load arm is 900 mm. The spring balance reading is 16. Applied wei

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The velocity of a particle which moves along the s-axis is given by = 40 − 3 2/ , ℎ t is in seconds. Calculate the displacement

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The displacement ∆S of the particle during the interval from t = 2sec to 4sec is; 210 sec

<h3>How to find the displacement?</h3>

We are given the velocity equation as;

s' = 40 - 3t²

Thus, the speed equation will be gotten by integration of the velocity equation to get;

s = ∫40 - 3t²

s = 40t - ¹/₂t³

Thus, the displacement between times of t = 2 sec and t = 4 sec is;

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