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2 years ago

A train travels 120 km in 2 hours and 30 minutes. What is its average speed

Physics

2 answers:

marissa [1.9K]2 years ago

5 0

Answer:

48 kmph

Explanation:

The question is asking you the kmph and that means the amount of kilometers travelled divided by the amount of hours. And if you want to think of it in a formula, SPEED = DISTANCE ÷ TIME

In this case, the amount of hours is 2.5 and the speed is 120km so 120/2.5 is 48

so the answer is 48 kmph

Molodets [167]2 years ago

5 0

2 hr 30 min is equal to 2.5 hours

Speed is distance/time

S=120/2.5

S=48 km/h

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(a) 0.165 m/s

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$p_i = 0$

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$p_f = m_a v_a + m_c v_c$

where

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Solving the equation for $v_c$ , we find

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(b) 520.8 N

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$F \Delta t = \Delta p$