KINEMATICS Grade 10

If a particle moves with uniform speed v , along a straight line then it’s distance(s) is given by:

• s=v/t

• s=v.t

• s=v²t

• s=ut+0.5gt²

A body is thrown upward and after some time the body reaches it’s maximum height, At maximum height:

• It’s velocity and acceleration both are zero.

• It’s velocity is zero and acceleration is maximum.

• It’s velocity is maximum and acceleration is minimum.

• It’s velocity is zero and acceleration is equal to acceleration due to gravity(g).

A body is thrown with speed 20m/s vertically upward , It will return to thrower’s hand after a time of:(assume g=10m/s²)

• 2 s

• 4 s

• 20 s

• never

A body is traveling in a circle at a constant speed.

• has a constant velocity

• has no acceleration

• has an inward acceleration

• has an outward radial acceleration

Motion of the tip of second hand of the clock is an example for

• Uniform circular motion

• Projectile motion

• Motion in a plane with uniform velocity

• Motion in a plane with constant acceleration

A circular motion is an accelerated motion

• True

• False

The velocity-time graph of a moving particle is shown in figure , The acceleration is maximum for part:

• AB

• BC

• CD

• Equal for all parts.

The velocity-time graph of a body is shown in figure, the acceleration for points AB , BC and CD are:

• 2 m/s² , 1 m/s² , 2 m/s²

• 1 m/s² , 2 m/s² , 3m/s²

• 2 m/s² , 0 m/s² ,3 m/s²

• 0.5 m/s² , infinity m/s² ,0.33 m/s²

Tags

NGSS.HS-PS2-1

If the acceleration of an object is zero, then that object cannot be moving

• True

• False

An object moving in the +x direction experiences an acceleration of +2.0 m/s². This means the object

• A) travels 2.0 m in every second

• B) is traveling at 2.0 m/s.

• C) is decreasing its velocity by 2.0 m/s every second.

• D) is increasing its velocity by 2.0 m/s every second.