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LenaWriter [7]
2 years ago
10

A car covers 120 km in 3 hours calculate its speed in m/s​

Physics
2 answers:
dexar [7]2 years ago
7 0

Solution :—

120 km = 120 x 1,000 = 120,000 m

3 hours 3 x 60 x 60 = 3600

3600 x 3 = 10,800 s

speed = \frac{120,000}{10,800}

=\frac{1200}{108}

= 11.1 m/s

8_murik_8 [283]2 years ago
6 0

Answer:

11.1 m/s

Explanation:

120 km = 120 x 1,000 = 120,000 m

3 hours = 3 x 60 x 60 = 3600 x 3 = 10,800 s

speed = 120,000 / 10,800

= 1200/108

= 11.1 m/s

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Given that a ball is released from a vertical height of 20 cm. It rolls down a "perfectly frictionless" ramp and up a similar ramp. What vertical height on the second ramp will the ball reach before it starts to roll back down?

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