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sukhopar [10]
3 years ago
6

2. What is the speed of a car that travels 73.4 kilometers (km) in 5 hours?

Physics
2 answers:
maksim [4K]3 years ago
7 0
Speed =dist./time
=73.4/5
=14.68 km/hr
horrorfan [7]3 years ago
7 0

me when i find out there's ice cream in the fridge.

:)

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Object A is 71 degrees and object B is 75 degrees how will thermal energy flow
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If the distance d (in meters) traveled by an object in time t (in seconds) is given by the formula d=a+bt2, the si units of a an
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2 years ago
Two metra trains approach each other on separate but parallel tracks. one has a speed of 90 km/hr, the other 80 km/hr. initially
Gennadij [26K]

The trains take <u>57.4 s</u> to pass each other.

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The relative velocity of the train A with respect to B is given by,

v_A_B=v_A-v_B\\ =(90km/h)-(-80km/h)\\ =170km/h

If the train B is assumed to be at rest, the train A would appear to move towards it with a speed of 170 km/h.

The trains are a distance d = 2.71 km apart.

Since speed is the distance traveled per unit time, the time taken by the trains to cross each other is given by,

t= \frac{d}{v_A_B}

Substitute 2.71 km for d and 170 km/h for v_A_B

t= \frac{d}{v_A_B}\\ =\frac{2.71 km}{170 km/h} \\ =0.01594 h

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t=(0.01594h)(3600s/h)=57.39s

Thus, the trains cross each other in <u>57.4 s</u>.

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2 years ago
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