MOTION GRADE IX

Which graph shows an object not moving?

• A
• B
• C
• D

Morgan walks 10 miles South. Trevor walks 10 miles North in the same amount of time.  They have:

• Different average speeds
• Different velocities
• Same velocity
• Same motion

A car starts from a stoplight and is traveling with a velocity of 10 m/sec east in 20 seconds.  What is the acceleration of the car?

• .5 m/s/s
• .5 m/s
• 2 m/s/s
• 2 m/s

A ball is rolled at a velocity of 12 m/sec.  After 36 seconds, it comes to a stop.  What is the   acceleration of the ball?

• 3 m/s/s
• -3 m/s/s
• .33 m/s/s
• -.33 m/s/s

This graph shows

• An object speeding up
• An object slowing down
• An object stopped
• An object moving at constant speed

Which type of speed does the speedometer of a car measures?

• Average speed

• Instantaneous speed

• Uniform speed

• Increasing speed

The odometer of a car reads 5000 km at the start of a trip and 5600 km at the end of the trip. If the trip took 3 hour, Calculate the average speed of a car.

• 100 km/hr

• 200 km/hr

• 300 km/hr

• 400 km/hr

Area under (v-t) graph represents a physical quantity which has the unit

• m²

• m

• m³

• ms^-1

Four cars A, B, C and D are moving on a levelled road. Their distance versus time graphs are shown in the given Figure. Choose the correct statement.

• Car A is faster than car D

• Car B is the slowest

• Car D is faster than car C

• Car C is the slowest

Calculate the total displacement travelled by the object in a given graph.

• 200 m

• 240 m

• 300 m

• 340 m