Question

physics 50 numerical ch motion class 9th

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Motions is a changes in the position of an object over time. Motion is described in term of displacement, distance, velocity, acceleration, time, and speed.

Step-by-step explanation:

. The train accelerates from 36 km/h to 54 km/h in 10 seconds.

. A body whose speed is constant

(a) It must be accelerated

(b) May be expedited

(c) It has a constant speed

. A scooter traveling at a speed of 10 m/s to 20 m/s in 4 seconds. Find the acceleration of the scooter.

. A train starts from rest and accelerates uniformly at 5 m/s2 for 5 seconds. Calculate the speed of the train in 5 seconds

. The maximum speed of the trains is 90 km/h. It take 10 hours to cover a distances of 500 km. Find the ratio of its average speed to its maximum speed

. The car starts from rest and reaches a speed of 54 km/h in 2 seconds. Find

i) acceleration

(ii) the distance traveled by the car assumes that the motion of the car is uniform?

. An object dropped from a cliff falls with a constant acceleration of 10 m/s2. Find its speed 5 s after it falls

. A ball is thrown up and goes to a height of 100 m and falls

1) What is the net displacement?

2) What is the net distance

. Two cars A and B are racing together. Car A drove for 2 minutes at 7.5 km/h, slept for 56 minutes and drove again for 2 minutes at 7.5 km/h. find the average speed of car A in the race

. An object moves in a straight line with an acceleration of 2 m/s2. If its initial speed is 10 m/s, what will its speed be 2 s later.

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