A jet makes a landing traveling due east with a speed of 115 m/s. If the jet comes to rest in 13.0 s, what is the magnitude of its average acceleration

8.846 m/s²

Explanation:

From the question,

The magnitude of the average acceleration is given as,

a = (v-u)/t Equation 1

Where a = acceleration of the jet, v = final velocity of the jet, u = initial velocity of the jet, t = time taken for the jet to come to rest.

Given: v = 115 m/s, u = 0 m/s( from rest), t = 13.0 s

Substitute these values into equation 1

a = (115-0)/13.0

a = 115/13

a = 8.846 m/s²

Hence the magnitude of the average acceleration of the jet is 8.846 m/s²

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000