Question

Activity 4: Problem Solving. Solve the following problems. Show your solution.

1. What distance is traveled by a police car that moves at a constant speed of 1.5km/minute for 5.0 minutes?

2. What distance would be covered in 10 minutes by a train that travels at a constant speed of 500 meters every 10 seconds?

3. What is the speed of a truck that travels 20 m in 240 s?

please with respect answers

Answer 1

Question - 1

What distance is traveled by a police car that moves at a constant speed of 1.5km/minute for 5.0 minutes ?

Solution -

✯Speed of car = 1.5km/min

✯Time = 5 min

✯ Distance traveled = ?

${\purple {\boxed{ \dag \sf \: distance = time \times speed}}}$

Distance traveled = 1.5×5

Distance traveled = 7.5km

_________________________

Question - 2

What distance would be covered in 10 minutes by a train that travels at a constant speed of 500 meters every 10 seconds ?

Solution -

✯Speed of train = 500m/10s or 50m/s

✯ Time = 10 min = 10×60s = 600s

✯ Distance = ?

${\red {\boxed{ \dag \sf \: distance = time \times speed}}}$

Distance traveled = 50×600

Distance traveled = 30000m or 30km

_____________________

Question - 3

What is the speed of a truck that travels 20 m in 240s ?

Solution -

✯Distance traveled = 20m

✯ Time = 240s

✯ Speed = ?

${\green {\boxed{ \dag \sf \:speed = \dfrac{distance}{time} }}}$

Speed = ${\dfrac{20}{240} }$

Speed = 0.083m/s

Answer 2

Answer:

Question - 1

What distance is traveled by a police car that moves at a constant speed of 1.5km/minute for 5.0 minutes ?

Solution -

• Speed of car = 1.5km/min
• Time = 5 min
• Distance traveled = ?

Distance = Time × Speed

• Distance traveled = 1.5×5
• Distance traveled = 7.5km

_____________________

Question - 2

What distance would be covered in 10 minutes by a train that travels at a constant speed of 500 meters every 10 seconds ?

Solution -

• Speed of train = 500m/10s or 50m/s
• Time = 10 min = 10×60s = 600s
• Distance = ?

Distance = Time × Speed

• Distance traveled = 50×600
• Distance traveled = 30000m or 30km

___________________

Question - 3

What is the speed of a truck that travels 20 m in 240s ?

Solution -

• Distance traveled = 20m
• Time = 240s
• Speed = ?

Speed = Distance / Time

• Speed = 20/240
• Speed = 2/24 = 1/12 m/s
• Speed = 0.083m/s