Vectors/Scalars
Which type of quantity has ONLY magnitude?
What is the formula for speed?
Distance/time
What is the equation that links acceleration, velocity and time?
a = (v-u)/t
A horizontal line on a distance/time graph shows what?
A stationary object
What is the chemical symbol for lead?
Pb
What type of quantity is weight?
A mouse runs 100m in 200 seconds. What is her speed?
0.5m/s
What is the acceleration due to gravity on Earth?
9.8 m/s2
How do you calculate the distance travelled from a velocity time graph?
The area underneath the graph.
Where in the body would you find the hypothalamus?
The brain
Name a vector and a scalar that share the same unit.
Speed/velocity OR distance/displacement
24,000m or 24km
What is the greek letter that denotes 'change'
Delta
Why is a vertical line impossible on a distance time graph?
The object would have had to travel instantaneously, breaking the speed of light.
The diameter of Earth is 12,742km. What is its circumference at the equator?
40,000km (to the nearest 1000km)
Name a scalar measurement that can have the unit K, F or C?
Temperature
A super-rocket travelled 1000km at the speed of 50m/s. How long did it take to the nearest hour?
6
A car begins at a speed of 3m/s and accelerates at 2m/s2 over a distance of 40m, calculate the final speed of the car.
13m/s
A curved line on a distance/time graph indicates what?
Acceleration
If every human on the planet shrunk to the size of an atom, what's the smallest thing they would all fit in?
a) an eggcup
b) a teaspoon
c) a water droplet
d) a grain of rice
D (easily)
A man walks 3 metres south, and then 4 metres east. What is his displacement?
5m south-east
A lemming jumps off a cliff. Which of the following is true:
a) Its velocity and speed increase
b)Only its velocity increases
c)Only its speed increases
d)It speed increases but its velocity decreases.
A
A motorbike drives around a roundabout at a constant speed of 50m/s. Which of the following is true:
a) Its speed and velocity stay the same
b) Its speed and velocity both change
c) Only its velocity changes
d) Not enough information to know
C
What would a straight horizontal line on an acceleration/time graph mean?
Constant acceleration
What was the first human invention to travel faster than the speed of sound?
The whip