Ticker tape timers

Speed is ...

• a measure of how fast a vehicle moves.

• a measure of the rate of change of distance.

• the same as velocity.

• a measure of the rate of change of displacement.

Tags

NGSS.MS-PS3-1

Calculate the speed of a bus which travels between two traffic lights 145 metres apart in 20 seconds

• 7.25 m s^-1

• 7.5 m s^-1

• 6.25 m s^-1

• 7.00 m s^-1

Tags

NGSS.MS-PS3-1

The correct formula for calculating the velocity of a moving body is ...

• v = ^t/_s

• v = s × t

• v = ^s/_t

• v = d/t

To convert from km h^-1 to m s^-1 you must ...

• multiply by 1000 and then divide by 360.

• multiply by 10 and then divide by 360.

• multiply by 1000 and then divide by 3600.

• multiply by 100 and then divide by 36 000.

The graph below shows displacement–time data for a vehicle travelling at a constant velocity. The velocity of the vehicle is ...

• 0.25 m s^-1

• 2.25 m s^-1

• 1.55 m s^-1

• 1.25 m s^-1

Tags

NGSS.MS-PS3-1

A ticker tape timer produced the section of ticker tape below. The time interval between any two dots is 0.2 of a second. According to this section of ticker tape the moving object that produced this section of tape was travelling at ...

• about 7.1 cm s^-1

• 6.9 cm s^-1

• 7.9 cm s^-1

• 7.5 cm s^-1

Tags

NGSS.MS-PS3-1

A long tape is attached to a moving trolley and threaded through a device that places a tick upon the tape at regular intervals of time.

The movement of a trolley down a slope was investigated using ticker tape with a frequency of 50 Hz. The ticker tape produced 50 dots per second.

The 14 cm length of the ticker tape was cut into four strips. It was cut through the middle of the first and then the sixth hole.

What is meant by acceleration?

Tags

NGSS.MS-PS2-2

A long tape is attached to a moving trolley and threaded through a device that places a tick upon the tape at regular intervals of time.

The movement of a trolley down a slope was investigated using ticker tape with a frequency of 50 Hz. The ticker tape produced 50 dots per second.

The 14 cm length of the ticker tape was cut into four strips. It was cut through the middle of the first and then the sixth hole.

Is the trolley moving at a constant velocity?

• Yes

• No

• We can't tell

Calculate the time that it took for Strip A to form

• 0.01s

• 0.1s

• 0.2

• 0.12

Calculate the mean velocity of the trolley for Strip A

• 0.2 cm/s

• 2 cm/s

• 20 cm/s

• 0.005 cm/s

Tags

NGSS.MS-PS3-1