9.2 ACCELERATION

The following objects has uniform speed except...

• hours

• fans

• lifts

• waves

The unit we use to measure acceleration is

• meters/second

• meters

• seconds

• meter/second/second

A car accelerates from standstill to 70m/s in 10 seconds. What is accelerations?

• 0.7 m/ $s^2$

• 7 m/ $s^2$

• 14 m/ $s^2$

• non of the above

Calculate the distance travelled by Uncle Goh Yoh.

Speed= 3m/min

Time=5.5 minutes

• 17.8m

• 16.5m

• 1.83m

• 0.54m

Ryan take 8 minutes to walk from house to school. If the distance between his house and the school is 840m, calculate the speed, in km/h of Ryan.

• 1.05km/h

• 6.5km/h

• 1.75km/h

• 5.9km/h

A train can travelled 760km in 2 hours. Calculate speed in m/s

• 105.50 m/s

• 6.33 m/s

• 102.34 m/s

• 63.33 m/s

Find the average speed of the journey in km/h.

• 34 km/h

• 63 km/h

• 55 km/h

• 60 km/h

A ball rolls 144cm in 12 seconds. What is it speed in meters per second?

• 12 cm/s

• 12 m/s

• 1.2 m/s

• 0.12 m/s

A car accelerates from 15m/s to 60m/s in 30 seconds. What is its acceleration?

• 2 m/ $s^2$

• 3 m/ $s^2$

• 1.5 m/ $s^2$

• 0,75 m/ $s^2$

According to the graph, how far does the person travel in the first 5 seconds?

• 2m

• 10m

• 0m

• 5m