Question

a) Iron
3, Abdul, while driving to school, computes the average speeds
his trip to be 20 km h . On his return trip along the same
route, there is less traffic and the average speed
30 km h-!. What is the average speed for Abdul's trip?
4. Amotorboat starting from rest on a lake accelerates in a stralia
line at a constant rate of 3.0 m s2 for 8.0 s. How far does
accelerates uniformly in the opposite direction. The car stora
A driver of a car travelling at 52 km h applies the brakes ani,
in 5 s. Another driver going at 3 km h-' in another car apple
his brakes slowly and stops in 10 s. On the same graph paper
B and (b) from A to C?
boat travel during this time?
ra
plot the speed versus time graphs for the two cars. Which
the two cars travelled farther after the brakes were applied
6. Fig 8.11 shows the distance-time graph of three objects Al
and C. Study the graph and answer the following questions​

Answer 1

Answer:

Average speed for backward journey[school -home] = Total distance/ Total time. ∴ The average speed for Abdul's trip is 24km/h.

Explanation:

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