F2 revision

what is the total distance travelled by A

• 12m
• 14m
• 16m
• 18m

what is the total distance travelled by B

• 12m
• 14m
• 16m
• 18m

Find the average speed of B from 0 second to 15 second

• 0.4m / min
• 0.5m / min
• 0.6m / min
• 0.7m / min

At 15 minutes, which is fastest?

• A
• B
• C

At 20 minutes, which is fastest?

• A
• B
• C

all household cleaners are alkaline

• True

• False

antacid contain alkaline to relieve 減輕 stomach胃 pain痛

• True

• false

we cannot hear if we do not have pinna

• true

• false

receptor in skin (fingertips, elbow, forhand) are evenly distributed

• true

• false

friction act on moving objects only

• true

• false