Conversions
600 m to km
.6 km
Scalar; how much ground is covered during motion; path length
Distance
If a car drives an average speed of 74 mph for 2.4 hours, how far does it travel?
x = v*t
Acceleration due to gravity on Mars (1/3 Earth gravity)
3.27 m/s^2
You are travelling at a constant speed of 7 m/s for 14 seconds. If you end at a displacement of 117 m, what was your initial displacement?
19 m
55 km/h to m/s
15.3 m/s
Define vector
A quantity with both magnitude and direction
A plane accelerates from 0 km/h to 100 km/h in 20 s. Find the acceleration in m/s^2
1.39 m/s^2
An apple falls from a tree and takes 4.4 seconds to land. How tall is the tree?
95 m
1 inch to cm
2.54 cm
How far out of place an object is; shortest line between points A and B
Displacement
1 mi to m (approx)
1609 m
9.81 m/s^2
The average acceleration due to gravity at the surface of the Earth
V0 = 6 m/s; Vf = 17.2 m/s; t = 3 s; Find: Delta X
34.8 m
41 mph to m/s
18.3 m/s
When should speed be used vs. velocity?
Speed is a scalar that goes with distance, velocity is a vector that goes with displacement and acceleration.
You throw a ball down from a window 15 m above the ground. If it hits the ground in 1.5 seconds, how fast did you throw it?
2.64 m/s
A train travels 500 m while braking with a deceleration of .2 m/s^2. If it starts at 42 m/s, how long does this braking take?
12.3 s