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