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## Magnitude of the initial acceleration

Magnitude of the initial acceleration
1. The position of a particle moving on a straight line path is given by: metre Its acceleration at t = 5 5s is:

(A) 9 ms–2

(B) 12 ms–2

(C) 18 ms–2

(D) 45 ms–2

2. The motion of a body is given by the equationWhereat time t is in ms–1and t is in seconds. If the body was at rest at t = 0, test the correctness of the following results are. The terminal speed is

(A) 2 ms–1

(B) 2 ms–2

(C) 3 ms–1

(D) 2 ms-2
3. The motion of a body is given by the equationWhereat time t is in ms–1and t is in seconds. If the body was at rest at t = 0, test the correctness of the following results are. The magnitude of the initial acceleration is
(A) 5 ms–2

(B) 6 ms–2

(C) 8 ms–2

(D) 7 ms–2
4. The motion of a body is given by the equationWhereat time t is in ms–1and t is in seconds. If the body was at rest at t = 0, test the correctness of the following results are. Then speed is?
(A)

(B)
(C)

(D)
5. The motion of a body is given by the equationWhereat time t is in ms–1and t is in seconds. If the body was at rest at t = 0, test the correctness of the following results are. The speed varies is, when the acceleration is half the initial value.
(A) u = 2 ms–1(B) u = 3 ms–1
(C) u = 4 ms–1(D) u = 1 ms–1
6. A body thrown vertically upward with velocity 10 m/s then how many height traveled by body.

(A) 5 m

(B) 10 m

(C) 15 m

(D) 20 m
7. A driver applies brakes to the vehicle on seeing traffic signal 400 m ahead. At the time of applying the brakes vehicle was moving with 15 ms-1and then starts retarding with 0.3 ms-2. The distance of vehicle after 1 min from the traffic light:

(A) 25m

(B) 375m

(C) 360m

(D) 40m
8. Which of the following graph correctly represents velocity-time relationship for a particle released from rest to fall freely under gravity?
(A)
(B)
(C)
(D)
9. A point moves rectilinearly with deceleration whose modulus depends on the velocity v of the particle aswhere k is a constant,. At the initial moment the velocity of particle is v0What time will it take to cover that distance?
(A)

(B)
(C)

(D)

10. A body starts from rest and acquires a velocity of 4 ms–1during a displacement of magnitude 4m. Its acceleration is:
(A) 0.5 ms–2

(B) 1 ms–2

(C) 2 ms–2

(D) 4 ms–2