Question

1 - A roller coaster moves on a certain section of its track with an average speed of 12 m/s. How much distance does it cover in 5.5 s

2-In a game of billiards you give the ball a speed of 0.76 m/s. How much time does it take for ball to cover a distance of 0.23 m?

3-What is the velocity of an object that moves from 73 m to 62 m in 12 s?

4-A comet is cruising through the solar system at a speed of 50,000 km/hr for 4 hours. what is the total distance traveled by the comet?

5-A finch rides on the back of a Galapagos tortoise, which walks at the stately pace of 0.060 m/s. After 1.2 minutes the finch tires of the tortoise's slow pace, and it takes flight, traveling in the same direction for another 1.2 minutes at 13 m/s. what was the average speed of the finch over the entire 2.4 minute interval?

Answer 1

Question 1:

$\sf \: distance = avg. \: v \times time$

$\sf \implies\: distance = 12 \times 5.5$

$\sf \implies\: distance = 66 \: m$

Distance travelled is 66 metres

Question 2:

$\sf time = \dfrac{distance}{velocity}$

$\sf \implies time = \dfrac{0.23}{0.76}$

$\sf \implies time \approx 0.3 \: sec$

So, time taken is approximately 0.3 sec.

Question 3:

$\sf \: velocity = \dfrac{displacement}{time}$

$\sf \implies \: velocity = \dfrac{change \: in \: position}{time}$

$\sf \implies \: velocity = \dfrac{73 - 62}{12}$

$\sf \implies \: velocity = \dfrac{11}{12}$

$\sf \implies \: velocity \approx 0.92 \: m {s}^{ - 1}$

So, velocity is 0.92 m/s.