Question

58. The velocity of a freely falling body after 2s is
(1) 9.8 ms (2) 10 2 ms' (3) 18,6 ms'
(4) 196ms!
59. A large number of bullets are fired in all directions with the same speed u The maximum area on
the ground on which these bullets will spread is
ли
mo
(1)
60
The minimum stopping distance for a car of mass m, moving with a speed v along a level road, If
the coefficient of friction between the tyres and the road is , will be
(4)
2ug
pg
2108
61. When a bicycle is in motion, the force of friction excreted by the ground on the two wheels is
such that it acts
(1) In the backward direction on the front wheel and in the forward direction on the rear wheel
(2) In the forward direction on the front wheel and in the backward direction on the rear wheel
(3) In the backward direction on both the front and the rear wheels
(4) In the forward direction on both the front and the rear wheels
62. In a perfectly inelastic collision, the two bodies
(1) strike and explode
(2) explode without striking
(3) implode and explode
(4) combine and move together
63. Under the action of a constant force, a particle is experiencing a constant acceleration, then the
power is
(1) zero
(2) positive
(3) negative
(4) increasing uniformly with time​

Answer 1

Answer:

58. the velocity of a freely falling body after 2second is also 9.8m/s

Answer 2

Answer:

58.answer is 19.6ms^2

61.option 3

62.option 2

63.option 1

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