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maxonik [38]
3 years ago
15

Emma is running for the bus. She runs 100 metres in 25 seconds. Calculate her speed

Physics
2 answers:
Afina-wow [57]3 years ago
8 0

Answer:

25km/h

is that the full question

beks73 [17]3 years ago
6 0
Speed = distance/time

s=d/t

s=100/25 = 4m/s

4m/s = 14.4kph (km/h)
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2 years ago
Ahmed fills a basket with shopping weighing 10 kg. How much work is being done on the shopping basket when he lifts it verticall
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The work done by the shopping basket is 147 J.

<h3>When is work said to be done?</h3>

Work is said to be done whenever a force moves an object through a certain distance.

The amount of work done on the shopping basket can be calculated using the formula below.

Formula:

  • W = mgh

Where:

  • W = Amount of work done by the basket
  • m = mass of the shopping basket
  • h = height of the shopping basket
  • g = acceleration due to gravity.

Form the question,

Given:

  • m = 10 kg
  • h = 1.5 m
  • g = 9.8 m/s²

Substitute these values into equation 2

  • W = 10(1.5)(9.8)
  • W = 147 J.

Hence, The work done by the shopping basket is 147 J.

Learn more about work done here: brainly.com/question/18762601

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