PHYSICS DRILL III

   Speed, Velocity, and Acceleration

1.         A body travels with a uniform speed of 80km/h. how long           will it take the body to cover a distance of 16km? (a) 5mins         (b) 12mins (c) 21mins (d) 33mins

2.         A velocity of 144km/h is equal to (a) 40.0m/s (b) 41.6m/s             (c) 86.4m/s  (d) 14.4m/s

3.        A car travelling at 20m/s is brought to rest with a constant            deceleration of 10m/s². Calculate the distance travelled (a)           10m (b) 20m (c) 400m (d) 450m

4.       A particle started from rest and accelerated uniformly at              12m/s². What is its velocity after half a minute? (a) 6km/h (b)      360m/h (c)1080km/h (d) 1,296km/h

5.      A train has an initial velocity of 44m/s and an acceleration of      -4m/s². Its velocity after 10seconds is? (a) 2m/s (b) 4m/s (c)          8m/s (d) 12m/s

6.     A jet fighter released a missile at a point 720m above ground     level. How long will it take the missile to fall to ground level?      (take g=10m/s²). (a) 6s (b) 12s (c) 36s (d0 72s

7.     A vehicle moving with a speed 18km/h accelerated uniformly      at 1m/s² for 20seconds. The distance covered within this time      is? (a) 38m (b) 300m (c) 305m (d) 318m

8.       A body is projected vertically upwards with a velocity of 40m/s. what is the maximum height the body will attain and how long will it take to reach this height? (g=10m/s²) (a) 80m, 4s (b) 40m, 4s (c) 80m, 2s (d) 20m, 2s

9.        A palm fruit drops to the ground from the top of a tree 45m tall. How long does it take to reach the ground? (g=10m/s²) (a) 9s (b) 45s (c) 6s (d) 3s

10.     A body has motion with uniform velocity if it (a) experiences equal changes in velocity in equal time intervals (b) experiences uniform acceleration (c) experiences equal changes in displacement in equal time intervals (d) experiences equal changes in acceleration in equal time intervals