Question

4. Height of the tower is (c) 58.8 m (a) 39.2 m (d) 78.4 m 4. The speed of a car reduces from 15 m/s to 5 m/s over a displacement of 10 m. The uniform acceleration of the car is : (a) -10 m/s? (b) + 10 m/s (c) 2 m/s (d) 0.5 m/s

5.A body projected vertically up with a velocity 10 m/s reaches a height of 20 m. If it is projected with velocity of 20 m/s, then the maximum height reached by the body is : (a) 20 m (b) 10 m (c) 80 m (d) 40 m

6. What does the area of an acceleration-time graph represent? (a) Uniform velocity (b) Displacement (c) Distance (d) Variable velocity

7. A driver applies brakes when he sees a child on the railway track, the speed of the train reduces from 54 km/h to 18 km/h in 5 s. What is the distance travelled by the train during this interval of time? (a) 52 m (b) 50 m (c) 25 m (d) 80 m​

Answer 1

Answer:

question 6 b diaplacement