PHY-WS2-CH2

An aircraft decelerates from 30 m/s to a complete stop in 12 seconds. What is its average acceleration?

• -2.5 m/s²

• 2.5 m/s²

• -3.0 m/s²

• -1.5 m/s²

A train travels at 720 km/h. How long will it take to travel 90 km?

• 7.5 minutes

• 6.5 minutes

• 8 minutes

• 12 minutes

Two cyclists leave the same town at the same time. Cyclist A travels at 90 km/h and Cyclist B at 60 km/h. How far apart will they be after 1 hour and 20 minutes?

• 20 km

• 30 km

• 40 km

• 45 km

Which is the unit of Force?

• kgm/s

• Nm/s

• kgm/s²

• Cm/s

A body accelerates uniformly from rest to 60 m/s in 3 seconds. What is its acceleration?

• 15 m/s²

• 20 m/s²

• 25 m/s²

• 18 m/s²

A truck of mass 5000 kg starts from rest and travels a distance of 625 m in 25 seconds. What is the acceleration of the truck?

• 2 m/s²

• 3 m/s²

• 4 m/s²

• 5 m/s²

A car starts from rest and accelerates uniformly over a time of 5.21s for a distance of 110m. What is the acceleration of the car?

• 4.06 m/s²

• 2.50 m/s²

• 8.10 m/s²

• 1.90 m/s²

An airplane accelerates down a runway at 3.20 m/s² for 32.8 s until is finally lifts off the ground. Determine the distance travelled before take-off.

• 1721.34 m
• 167.94 m

• 3442.69 m

• 2172.17 m

A race car accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. Determine the acceleration of the car and the distance travelled.

• Acceleration: 11.17 m/s², Distance: 79.78 m

• Acceleration: 10.04 m/s², Distance: 51.28 m

• Acceleration: 15.62 m/s², Distance: 75.13 m

• Acceleration: 8.75 m/s², Distance: 45.02 m

A bike accelerates uniformly from rest to a speed of 7.10 m/s over a distance of 35.4 m. Determine the acceleration of the bike.

• 0.519 m/s²

• 1.08 m/s²

• 0.712 m/s²
• 0.1 m/s²