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Leokris [45]
3 years ago
13

A student drove to the university from her home and noted that the odometer reading of her car increased by 12.0 km. The trip to

ok 18.0 min. (a) What was her average speed
Physics
1 answer:
Rudik [331]3 years ago
3 0

Answer:

Her average speed was 40 km/h.

Explanation:

Hi there!

The average speed (a.s) is calculated as the traveled distance divided by the time it took to cover that distance:

a.s = d/t

Where:

d = traveled distance.

t = time.

In this case, the odometer reading of the car increased by 12.0 km, which means that the distance traveled is 12.0 km. The time it took the student to cover that distance is 18.0 min (18.0 min · 1 h/60 min = 0.3 h) . Then the average speed will be:

a.s = d/t

a.s = 12.0 km/ 0.3 h

a.s = 40 km/h

Her average speed was 40 km/h.

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Answer:

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A ball is thrown vertically upward from the edge of a bridge 22.0 m high with an initial speed of 16.0 m/s. The ball falls all t
KonstantinChe [14]

To solve this problem we will apply the concepts related to the kinematic equations of motion. We will start calculating the maximum height with the given speed, and once the total height of fall is obtained, we will proceed to calculate with the same formula and the new height, the speed of fall.

The expression to find the change in velocity and the height is,

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