unit 1 force and motion revision

the concept of the body movement means..............................

• its speed

• the change in its position with the change in time

• its accelaration

A moving car covers 500 m in 20 sec. , so is the speed equals...............

• 25 km/h

• 20 km/h

• 25 m/s

• 20 m/s

the two factors which are necessary for the description of motion are the.........................

 

• weight and length

• time and area

• distance and time

• speed and time

speed measuring unit is.................................

• metre/second

• metre² /second

• metre/second²

• metre.second

Tags

NGSS.MS-PS3-1

If the uniform speed of a car is 72 km/h, so its speed in m/s equals.......................................

• 20 m/s

• 25 m/s

• 18 m/s

• 40 m/s

it is said that the object moves at a uniform acceleration when.......................................................

• its final speed is equal to its primary speed.

• its speed increases by equal amounts at equal times.

• it covers equal distance at equal times.

• its speed increases by equal values at unequal times.

the relative speed of a moving object relative to an observer moving at the same speed in the opposite direction is .......................................the actual speed.

• double

• the same

• half

• zero

acceleration is the distance moved through a unit time

• true

• false

speedometer helps in identifying the speed of the car dierectly

• true

• false

acceleration measuring unit is .........................

• metre/sec.

• metre / sec.²

• metre² /sec,