Question

1. An object Travels 16 metre in 4 second and then another 16 metre in 2 second . What is the average speed of the object ?

2. The odometer of a car 2000 km at the start of a trip and 2400 km at the end of the trip . If the trip took 8 hour , calculate the average speed of the car in km/h and m/s .

3. Usha swims in a 19m long pool . She covers 180 metre in 1 minute by swimming from one end to the other and back along the same straight path . Find the average speed and average velocity of Usha .

4. A body is moving with a velocity of 15 m/s . If the motion is uniform , what will be the velocity after 10 second .

5. Starting from a stationary position, Rahul paddels his bicycle to attain a velocity of 6 m/s in 30 s . Then he applies brakes such that the velocity of bicycle comes down to 4 m/s in the next 5 second . Calculate the acceleration of the bicycle in both the cases .

6. A train travels some distance with a speed of 30 km/h and returns with a speed of 45 km/h . Calculate the average speed of the train .

7. A train 100 m long moving on a straight level track passes a pole in 5 s . Find (a) the speed of the train (b) the time it will take in to cross a bridge 500 m long .

8. A car travels along a straight lion for first half time with speed 40 km/h and the second half time with speed 60 km/h. find the average speed of the car.

9. A body starts rolling over a horizontal surface with an initial velocity of 0.5 m/s² . Due to friction , its velocity decreases at the rate of 0.05 m/s² . How much time will it take for the body to stop ?

10. A car travelling at 36 km/h speed upto 72 km/h in 5 second. what is it acceleration ? If the same car stops in 20 second , what is the retardation ?
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Answer 1

Answer:

I could answer only the first one sorry about that it's anwer is 8m in in 1 second

Answer 2

see this answer....

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