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Acceleration  
 
Newton's laws

Acceleration

Вопрос:

An object is accelerating, if .. ?

Ответ:  

only when its speed changes

only when its direction changes

if its velocity is large


Velocity

Вопрос:

Which of the following could be a velocity?


Ответ:  

5 meters west
5 meters per second
5 meters per second per second


Falling

Вопрос:

A ball is thrown straight upwards at a speed of 32.3 m/s and from a height of 1.5 m above the ground. How fast is it traveling when it hits the ground? (m/s)


Ответ: