2456694
Questão 1
Questão
What happens to a moving car when there is a resultant force?
Responda
-
It accelerates
-
It decelerates
-
It stays the same
Questão 2
Questão
The acceleration of a car depends on..
Responda
-
speed it was traveling and road surface
-
air resistance applied and mass of car
-
size of resultant force and mass of car
Questão 3
Questão
What can an object best accelerate?
Responda
-
when the force is greater but mass is smaller
-
when the mass is greater and the force is greater
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when the force is smaller but the mass is greater
Questão 4
Questão
what is newtons second law of motion?
Responda
-
force (N) = Mass (kg) + acceleration (m/s squared)
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force (N)= Mass (kg) x acceleration (m/s squared)
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force (N)= Mass (kg) - acceleration (m/s squared)
Questão 5
Questão
when investigation force and acceleration what must you keep the same?
Responda
-
Force
-
Mass
-
Acceleration
Questão 6
Questão
How do you work out Acceleration (m/s squared) ?
Responda
-
change in velocity (m/s) divde by time (s)
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change in velocity (m/s) x time (s)
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change in velocity (m/s) - time (s)
Questão 7
Questão
cyclist accelerates from 0 to 10 m/s in 5 seconds. What is her acceleration?
(acceleration= change in velocity divided by time)
Responda
-
5m/s sqaured
-
4 m
-
2 m/s squared
Questão 8
Questão
Mass is a scalar property
Responda
- True
- False
Questão 9
Questão
Weight is another word for mass
Responda
- True
- False
Questão 10
Questão
on the moon the gravitational field strength is 1.6 n/kg. What will james (who weighs 70 kg on earth) weight be on the moon?
(Weight= mass x gravitation field strength)
Responda
-
112n
-
112kg
-
64 n
Questão 11
Questão
As the speed of an object increases the drag on it decreases
Responda
- True
- False
Questão 12
Questão
in a vacuum all objects fall at the same rate mass does not matter
Responda
- True
- False
Questão 13
Questão
depending on the mass of the falling objects depends the rate of acceleration
Responda
- True
- False
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