# A ball is thrown vertically upwards. Then the velocity-time $$(v\text-t)$$ graph will be: 1. 2. 3. 4.

Subtopic:  Graphs |
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In the following displacement $$(x)$$ versus time $$(t)$$ graph, at which points $$P, Q$$ and $$R$$ will the object's speed be increasing?

1. $$R$$ only
2. $$P$$ only
3. $$Q$$ and $$R$$ only
4. $$P,Q,R$$

Subtopic:  Graphs |
From NCERT
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The displacement time graph of a moving particle is shown in the figure below. The instantaneous velocity of the particle is negative at the point:

 1 D 2 F 3 C 4 E
Subtopic:  Graphs |
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A particle moves along a path $$ABCD$$ as shown in the figure. The magnitude of the displacement of the particle from $$A$$ to $$D$$ is:

1. $\left(5+10\sqrt{2}\right)$m
2. $$10$$ m
3. $15\sqrt{2}$ m
4. $$15$$ m

Subtopic:  Distance & Displacement |
70%
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For the following acceleration versus time graph, the corresponding velocity versus displacement graph is:

 1 2 3 4
Subtopic:  Graphs |
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A stone falls freely from rest from a height $$h$$ and it travels a distance of $$\frac{9 h}{25}$$ in the last second. The value of $$h$$ is:

 1 $$145$$ m 2 $$100$$ m 3 $$122.5$$ m 4 $$200$$ ms
Subtopic:  Uniformly Accelerated Motion |
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The initial velocity of a particle is $$u$$ (at $$t=0$$) and the acceleration $$f$$ is given by $$at$$. Which of the following relation is valid?
1. $$v = u + a t^{2}$$
2. $$v = u + a \frac{t^{2}}{2}$$
3. $$v = u + a t$$
4. $$v= u$$

Subtopic:  Non Uniform Acceleration |
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PMT - 1981
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Which of the following four statements is false?

 1 A body can have zero velocity and still be accelerated. 2 A body can have a constant velocity and still have a varying speed. 3 A body can have a constant speed and still have a varying velocity. 4 The direction of the velocity of a body can change when its acceleration is constant.

Subtopic:  Instantaneous Speed & Instantaneous Velocity |
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 Assertion (A): Displacement of a body may be zero when distance travelled by it is not zero. Reason (R): The displacement is the longest distance between initial and final position.

 1 Both (A) and (R) are True and (R) is the correct explanation of (A). 2 Both (A) and (R) are True but (R) is not the correct explanation of (A). 3 (A) is True but (R) is False. 4 Both (A) and (R) are False.
Subtopic:  Distance & Displacement |
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A particle moves a distance $$x$$ in time $$t$$ according to equation $$x = (t+5)^{-1}$$. The acceleration of the particle is proportional to:

 1 $$(\text{velocity})^{\frac{3}{2}}$$ 2 $$(\text{distance})^2$$ 3 $$(\text{distance})^{-2}$$ 4 $$(\text{velocity})^{\frac{2}{3}}$$
Subtopic:  Acceleration |
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NEET - 2010
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