463210
Questão 1
Questão
what is a vector?
Responda
-
A physical quantity that has both magnitude and direction.
-
A physical quantity that only has magnitude.
Questão 2
Questão
A force can be split into two components.
Responda
- True
- False
Questão 3
Questão
what does the gradient on a displacement time graph show?
Responda
-
Velocity
-
Acceleration
Questão 4
Questão
what are the conditions that the SUVAT equations can be used in?
Responda
-
constant velocity
-
constant acceleration
-
ignore air resistance
-
The object is in freefall
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The acceleration is positive
Questão 5
Questão
what is the formula for work done?
Responda
-
w=fd
-
w=mgh
Questão 6
Questão
The sum of forces and moments of an object in equilibrium equals...
Responda
-
0
-
10
-
46
-
94
Questão 7
Questão
what is the definition of centre of gravity?
Responda
-
The gravitational force on a body
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The point at which the entire weight of an object can be considered to act
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The centre of the gravitational field
Questão 8
Questão
pressure is the same as weight
Responda
- True
- False
Questão 9
Questão
braking distance increases constantly
Responda
- True
- False
Questão 10
Questão
power is ...
Responda
-
the rate of work done.
-
work done x time
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