8/11/2019 Physics test kinemetics

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Review Test

Physics

4 Aug 2013

Q.1 A car is moving in St.line .Its displacement time graph (x-t curve) is shown in Column II, match the points

P,Q,R,S with the options in Column I.

Column I Column II

(A) x -negative, v -positive, a -positive .........

(B) x -positive, v -negative, a -negative .........

(C) x -negative, v -negative, a -positive ..........

(D) x -positive, v -positive, a -negative ...........

(a)

(b) Identify the points where the car retards. ......................

8

Paragraph for question nos. 1 to 4

The graph given shows the POSITIONof two cars, A and B, as a function of time. The cars

move along the x-axis on parallel but separate tracks, so that they can pass each others

position without colliding.

t1 t

2 t

3 t4

AB

x

t

Q.2 At which instant in time is car-A overtaking the car-B ?

(A) t1

(B) t2

(C) t3

(D) t4

Q.3 At time t3, which car is moving faster?

(A) car A (B) car B (C) same speed (D) None of these

Q.4 At which instant do the two cars have the same velocity ?

(A) t1

(B) t2

(C) t3

(D) t4

Q.5 Which one of the following best describes the motion of car A as shown on the graphs?

(A) speeding up (B) constant velocity

(C) slowing down (D) first speeding up, then slowing down

Q.6 An object thrown upwards with velocity u from top of building of height H .Taking

downward direction as +Y axis and point of projection as origin,t=0 -time of projection.

Draw its displacement-time(x-t) & velocity-time curve from t=0 to the time when it hits

the ground.

[12]

[10]

PTQ013

Time:45 min

8/11/2019 Physics test kinemetics

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Q7.At a distance L = 200m from the traffic light brakes are applied to a locomotive moving at a velocity

v = 54 km/hr. Determine the position of the locomotive relative to the traffic light 1 minute after the application

of the brakes if its acceleration is 0.5m/sec2. ...............Ans. [5]

Q8.Match the angle between acceleration and velocity with the path of the particle. [5]

(A) 1800 (P) Any arbitrary Curve

(B) 00 (Q) St. Line(C) 900 (R) Parabola

(D)between 00-900 (S) Circle

Q9.A boy is going to school from home which is 1.6km away, he can have maximum acceleration 3m/s2and maximum

retardation 6 m/s2 .If he can reach upto maximum speed of 100m/s.Find the minimum time to reach the school,also

ind the maximum speed attained by him during this duration. .................................. [10]

PTQ013