Motion in A Straight Line Test

Question 1
1 / -0

In one-dimensional motion, instantaneous speed \(\upsilon\) satisfies \(o\leq v \leq v_0\).

A
The displacement in time T must always take non-negative values.

B
The displacement x in time T satisfies \(-v_0T<x<v_0T\)

C
The acceleration is always a non-negative number

D
The motion has no turning points.

Question 2
1 / -0

A vehicle travels half the distance L with speed \(v_1\) and the other half with speed \(v_2\) , then its average speed is

A
\({v_1+v_2\over2}\)

B
\({2v_1+v_2\over v_1+v_2}\)

C
\(2v_1v_2\over v_1+v_2\)

D
\(L(v_1+v_2)\over v_1v_2\)

Question 3
1 / -0

At metro station, a girl walks up a stationary escalator in time \(t_1\) . If she remains stationary on escalator, then the escalator take her up in time \(t_2\) . The time taken by her to walk up on the moving escalator will be:

A
\((t_1+t_2)\over 2\)

B
\((t_1t_2)\over (t_1-t_2)\)

C
\((t_1t_2)\over (t_1+t_2)\)

D
\((t_1-t_2)\)

Question 4
1 / -0

For the one-dimensional motion, described by x = t - sin t

(a) X(t) > 0 for all t > 0

(b) V(t) > 0 for all t > 0

(c) A(t) > 0for all t > 0

(d) V(t) lies between 0 and 2

A
a

B
a,b

C
a,d

D
All of the above

Question 5
1 / -0

A ball is bouncing elastically with a speed of 1m/s between walls of a railway compartment of size 10m in the direction perpendicular to walls. The train is moving at a constant speed of 10 m/s parallel to the direction of motion of the ball. As seen from the ground,

(a) The direction of motion of the ball changes every 10 seconds.

(b)The speed of the ball changes every 10 seconds.

(c) average speed of the ball over any 20 seconds interval is fixed

(d) the acceleration of ball is the same as from the train.

A
b,c,d

B
a,c,d

C
All of the above

D
None of the above

Submit Test

Motion in A Str...

Question 1

The displacement in time T must always take non-negative values.

The displacement x in time T satisfies \(-v_0T<x<v_0T\)

The acceleration is always a non-negative number

The motion has no turning points.

Question 2

\({v_1+v_2\over2}\)

\({2v_1+v_2\over v_1+v_2}\)

\(2v_1v_2\over v_1+v_2\)

\(L(v_1+v_2)\over v_1v_2\)

Question 3

\((t_1+t_2)\over 2\)

\((t_1t_2)\over (t_1-t_2)\)

\((t_1t_2)\over (t_1+t_2)\)

\((t_1-t_2)\)

Question 4

a

a,b

a,d

All of the above

Question 5

b,c,d

a,c,d

All of the above

None of the above

User

Question Analysis

Motion in A Str...

Question 1

The displacement in time T must always take non-negative values.

The displacement x in time T satisfies \(-v_0T<x<v_0T\)

The acceleration is always a non-negative number

The motion has no turning points.

Question 2

\({v_1+v_2\over2}\)

\({2v_1+v_2\over v_1+v_2}\)

\(2v_1v_2\over v_1+v_2\)

\(L(v_1+v_2)\over v_1v_2\)

Question 3

\((t_1+t_2)\over 2\)

\((t_1t_2)\over (t_1-t_2)\)

\((t_1t_2)\over (t_1+t_2)\)

\((t_1-t_2)\)

Question 4

a

a,b

a,d

All of the above

Question 5

b,c,d

a,c,d

All of the above

None of the above

User

Question Analysis

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