1.
The area under the acceleration-displacement graph represents
2.
The area under the velocity-time graph represents
3.
A particle covers half of its total distance with constant speed v₁ and the rest half distance with constant speed v₂. Its average speed during the complete journey is:
4.
A body is moving along a stright line path with constant velocity. At an instant of time, the distance travelled by it is S and its displacement is D., then
5.
A car travells half of its distance with constant velocity of 40 km/hr and remaining half with constant velocity of 60 km/hr. The average speed of the car in km/hr is
6.
The three initial and final position position of a man on the x-axis are given as: (i) (-8m, 7m), (ii) (7m, -3m) and (iii) (-7m, 3m). Which pair gives the negative displacement?
7.
An athlete completes one round of a circular track of radius R is 40 sec. What will be his displacement at the end of 2 min 2 sec?
8.
The numerical ratio of displacement to the distance is always
9.
Mohan reached the metro station and found that the escalator was not working. He walked up the stationary escalator in time time t₁. On the other days, if he remains stationary on the moving escalator, then the escalator takes himup in time t₂. The time taken by him to walk on the moving escalator will be
10.
Two bodies are trown vertically upwards with their initial speed in the ratio 2:3. The ratio of maximum heights reached by them and the ratio of time taken by them to the ground respectively are
11.
Two trains, each, 50 m long are travelling in opposite direction with velocity 10 m/s and 15 m/s. The time of crossing is
12.
A particle has initial velocity of 3î + 4ĵ and an acceleration of 0.4î + 0.3ĵ. Its speed after 10 s is
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