Class 9 Motion

 $If\ displacement\propto\left(time\right)^2,\ then$  

• acceleration =0

• accelaration is constant

• accelaration is non uniform

• The body is at rest

• Velocity is non uniform

Tags

NGSS.HS-PS2-1

 $If\ displacement\ \propto\left(time\right)^3$  ,Then what can you say about the motion of the body?

• The body is accelerating non uniformly without respect to time

• The body is retarding

• The velocity is constant

• There is no displacement

• The body is accelerating with time

Tags

NGSS.HS-PS2-1

A truck driving at 60 miles per hour travels 150 miles. How long is it driving for?

• 9000 hours
• 0.4 hours
• 210 hours
• 2.5 hours

Which of the following is a vector quantity?

• Work

• Speed

• Velocity

• Force

• Accelaration

Tags

NGSS.HS-PS3-5

What is the rate of change in velocity known as?

(a)  

Tags

NGSS.HS-PS2-1

Ram travels at a speed of 20 km/hr while going to school. While coming back, he travels at a speed of 30 km/hr(due to less traffic). What his it’s average speed?

• 25km/hr

• 26km/hr

• 20km/hr

• 24km/hr

• Cant be determined

During which interval is the object traveling at a constant velocity?

• B to C
• D to E
• F to G
• it traveling at a constant velocity during all of the intervals shown.

Tags

CCSS.8.EE.B.5

Acceleration is

• increasing speed
• decreasing speed
• changing direction
• all of the above

Tags

NGSS.HS-PS2-1

This is a velocity-time graph.  What is the object doing in segment C?

• Positive acceleration
• Negative acceleration
• Constant Velocity
• Not moving

Tags

CCSS.HSF.IF.B.4

A particle is moving in a circular path of radius r.

The displacement after half a circle would be:

• (a) Zero

• (b) πr

• (c) 2r

• (d) 2πr