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oksian1 [2.3K]
3 years ago
15

The law of conservation of momentum of two interacting objects that make up a system

Physics
1 answer:
Aleonysh [2.5K]3 years ago
6 0
The law of conservation of momentum states that, if left alone, the total momentum of two interacting objects that make up a system remains the same.
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A man on a road trip drives a car at different constant speeds over several legs of the trip. He drives for 55.0 min at 60.0 km/
KatRina [158]

Complete Question

A man on a road trip drives a car at different constant speeds over several legs of the trip. He drives for 55.0 min at 60.0 km/h, 18.0 min at 80.0 km/h, and 60.0 min at 60.0 km/h and spends

25.0 min eating lunch and buying gas

What is the total distance traveled over the entire trip (in km)

Answer:

The value is D = 139.02 \ km

Explanation:

From the question we are told that

For t_1 =  55 min = \frac{55}{60}  =  0.917 \ h the speed is v_1 =  60 \  km/h

For t_2 =  18 min  = \frac{18}{60}  =  0.3 \ h the speed is v_2 =  80 \  km/h

For t_3 = 60 min = \frac{60}{60}  =  1 \ h the speed is v_3 =  60\  km/h

The time taken to have lunch is t _l  = 25 \  min =  \frac{25}{60} =  0.42 \  h

Generally the total distance traveled over the entire trip (in km) is mathematically represented as

D = t_1 *  v_1 + t_2 * v_2 + t_3 * v_3

=>   D = 0.917  *  60 +  0.3 * 80 +  1  * 60

=>   D = 55.02  + 24 +   60

=>   D = 139.02 \ km

4 0
4 years ago
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