The distance-time graph of motion of a cycle is shown in the figure. What is the average speed of cycle over a time period of 12 s?
A0.48 m s–1
B0.58 m s–1
C2.17 m s–1
D3.17 m s–1
Three identical seeds are planted and grown in identical pots of soil. All three pots
receive equal amounts of sunlight. The plants are watered once each day. Plant X is
given 20 mL of water. Plant Y is given 40 mL of water. Plant Z is given 60 mL of water.
The height of each plant is measured and recorded after ten days. Which question could
be answered by this experiment?
A How much space does a plant need to grow?
B How much soil does a plant need to grow?
C How much water will make a plant grow tallest?
D How much sunlight will make a plant grow tallest?
A boy is running down the stairs at a constant speed. Which of the following is true
regarding the amount of potential energy and kinetic energy?
A Kinetic energy increases and potential energy decreases.
B Potential energy increases and kinetic energy decreases.
C Potential energy decreases and kinetic energy remains unchanged.
D Kinetic energy decreases and potential energy remains unchanged.
Which one of the following is not a similarity between Earth and Moon?
1. Both do not give off light of their own
2. Both are round in shape
3. Both are Sun's satellite
4. Both have gravitational pull
A 1 and 2
B 2 and 3
C 3 and 4
D 4 and 1