9 Motion - Praneeta

A person walks 50 meters directly north, stops, and then travels 32 meters directly south.  What is their displacement?

• 82 meters
• 18 meters
• 28 meters

A vehicle travels 2345 m in 315 s toward the evening sun. What is its speed?

• 7.44 m/s

• 0.13 m/s

• 738,675 m/s

• 7.44m

What distance will a car traveling 65 km/hr travel in 180 min?

• 11,700 m

• 195 m

• 21.7 m

• 2.77 m

What is happening in the graph from point O to A?

• The object is moving SLOWLY
• The object is moving FAST
• The object is NOT moving
• The object is accelerating

What is this graph showing?

• Constant Speed
• Acceleration (speeding up)
• Deceleration (slowing down)
• No motion

What is this graph showing?

• Constant Speed
• Acceleration (speeding up)
• Deceleration (slowing down)
• No motion

During which interval is the object not moving?

• B to C
• C to D
• D to E
• only at point A

    When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, the retardation will be

• +2 m s ^-2         

• -2 m s ^-2            

• – 0.5 ms^-2          

• + 0.5 m s^-2  

  A bus starting from rest moves with uniform acceleration of 0.1 m/s² for 2 minutes. The distance covered by  the bus is

• 720 m          

• 620 m.               

• 320 m               

• 520 m 

If a bus decreases its speed from 80 km/h to 60m/h, then its retardation is

• 11.1 ms^-2       

• 1.11ms^-2                    

• -1.11 ms^-2          

• 111 ms^-2