Question

a lorry travels for 75 km per hour and down to 30 km per hour in 15 seconds find its retardation​ If any body answer correct I will mark as u brainliest​

Answer 1

Answer:

Ok, here is the answer, my friend.

Given, initial velocity = 75 km/hour

final velocity = 30 km/hour

time = 15 seconds = 0.25 hour

acceleration =final velocity - initial velocity / time

acceleration = 30 km/hour - 75 km/hour/ 0.25 hour

acceleration = -45 km/hour / 0.25 hour

acceleration = -180 km/hour²

Or, acceleration = -50m/s²

Now retardation = negative acceleration = 50m/s²

Explanation:

The solution has been double-checked and it is correct

Hope you like the solution.

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