Question

Sc U4 Forces and Motion Assessment (Lunch) / 8 of 25

A boy and his two friends push three toy cars across a smooth floor. Each car is being pushed at the same constant speed.
Car
Time of push
Distance of push
A
10 seconds
5 meters
B
5 seconds
?
с
15 seconds
Determine the distance cars B and C must travel in order for all cars to go the same speed. (DOK 2, AKS 8a)
O A Cars B and C must travel 5 m since that is how far Car A travelled
OB. Car C must travel 7.5 m and Car B must travel 2.5 m
O C. Car B must travel 20 m and Car C must travel 30 m
D. Car B must travel 7.5 m and Car C must travel 2.5 m

Answer 1

To maintain the same speed as car A, car B must travel 2.5 meters and car C must travel 7.5 meters.

Step-by-step explanation:

The question asks to determine the distances cars B and C must travel in order for all cars to go the same speed. Since speed is distance divided by time, we can calculate the speed of car A and use that speed to find the distances for cars B and C.

Speed of car A = 5 meters / 10 seconds = 0.5 meters/second. To maintain the same speed, car B travelling for 5 seconds needs to cover 0.5 meters/second * 5 seconds = 2.5 meters. Car C travelling for 15 seconds needs to cover 0.5 meters/second * 15 seconds = 7.5 meters.

Therefore, Car B must travel 2.5 meters and Car C must travel 7.5 meters for all cars to have the same speed.

Answer 2

The answer is B because you need to have both of the distances the same

Step-by-step explanation: