Motion In A Plane

Physics
5330 Views

Assertion

In a projectile motion, the angle between the instantaneous velocity and the acceleration at the highest point is .

Reason

At the highest point, velocity of projectile will be in horizontal direction only.

A
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are true, but Reason is not the correct explanation of the Assertion.
C
Assertion is true, but the Reason is false.
D
Assertion is false, but the Reason is true.
Medium
View solution>
Assertion

In case of a projectile, the angle between velocity and acceleration changes from point to point.

Reason

Because its horizontal component of velocity remains constant, while vertical component of velocity changes from point to point due to gravitational acceleration.

A
Both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B
Both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.
C
Assertion is true, but the Reason is false.
D
Assertion is false, but the Reason is true.
Medium
View solution>
Assertion

Using only vertical component of velocity of a projectile, time of flight can be calculated but horizontal range cannot be calculated.

Reason

Time of flight depends on horizontal component and range depends on vertical component of velocity of projection.

A
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are true, but Reason is not the correct explanation of the Assertion.
C
Assertion is true, but the Reason is false.
D
Assertion is false, but the Reason is true.
Medium
View solution>

If a particle moves in a circle, describing equal angles in equal intervals of time, the velocity vector:

A
Remains constant.
B
Changes in magnitude.
C
Changes in direction.
D
Changes both in magnitude and direction.
Medium
View solution>
Assertion

The horizontal displacement of a projectile varies linearly with time.

Reason

Projectile motion is uniform motion along horizontal and accelerated motion along vertical.

A
Both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B
Both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.
C
Assertion is true, but the Reason is false.
D
Assertion is false, but the Reason is true.
Medium
View solution>

For a projectile, the physical quantities which remain constant are:

A
vertical component of velocity and kinetic energy.
B
potential energy and kinetic energy.
C
acceleration and horizontal component of velocity 
D
potential energy and acceleration.
Medium
View solution>