Question

A parucie is moving towards East with velocity 8 ms and acceleration 4 ms 2 directed towards West. F1
the distance travelled in 6 seconds.
(A) 40 m
(B) 24 m
(C)32 m
(D) 16 m
A particle moving on a straight line moves with an acceleration 'a'at t=0. After t=t, its acceleration
measured to be ‘a’ again. Then which of the following sentences is (are) certainly correct?
v(0)+v(t)
(1) v(t)=v(0) + at
(II) s(t) =S, +-
2
(A) only I
(B) II only
(C) both I and II (D) None of these
A car moving with a speed of 40 km/hr can be stopped by applying brakes after at least 2 m. If the same
is moving with a speed of 80 km/hr, what is the minimum stopping distance
(A)2m
(B) 4m
(C)6m
(D) 8m
A car moving at 160 km/h when crosses the marker-0, driver applies brake and reduces its speed unifor
040 km/h at marker-2. The markers are spaced at equal distances along the road as shown below.
at which part of the track would the car have been traveling at instantaneous speed of 100 km/h?
1) At marker-1
(B) Between marker-O and marker-1
Between marker-1 and marker-2
(D) More information required to decide.
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Answer 1

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