Can someone help? Thanks.
Franks car rolled 300 cm in 1.5 s. Noahs car rolled 360 cm in 2 s. What is the average speed for each car?

The average speed of Frank's car is 2 m/s and the average speed of Noah's car is 1.8 m/s.

Explanation:

Average speed is the measure of total distance covered at different time period. Since, the formula used for calculating the average speed is the ratio of total distance covered by each car to the time taken to cover that distance.

As there is only one set of data i.e., distance and time, the average speed will be equal to the speed of the car.

So in this case, the total distance covered by franks car is 300 cm = 3 m in 1.5 s. Then, the average speed will be

Similarly, the average speed of Noahs car which rolled a distance of 360 cm = 3.6 m in time 2 s, will be

Thus, the average speed of Frank's car is 2 m/s and the average speed of Noah's car is 1.8 m/s.

no. dot product   =0 when vecs at right angles

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.