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Author Question: A sports car of mass 1000 kg can accelerate from rest to 72. km/h in 6.6 s. What would the average ... (Read 49 times)

ec501234

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on: Jul 27, 2018
A sports car of mass 1000 kg can accelerate from rest to 72. km/h in 6.6 s. What would the average force of the car's engine be?
 
  What will be an ideal response?

Question 2

What is the equation of motion of a 30. gram mass on a spring of stiffness 3.0 N/m if it is initially displaced 7.7 cm and released?
 
  What will be an ideal response?


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adf223

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Reply #1 on: Jul 27, 2018
Answer to Question 1

3.0  103 N

Answer to Question 2

y = 7.7 cos(10 t) where y is in cm and t in seconds.


ec501234

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Reply 2 on: Jul 27, 2018
Gracias!

sarah_brady415

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Reply 3 on: Yesterday
Excellent

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