Science 10
Calculating average Velocity
Name: _________________
Formulas
v=d
t
d=v x t
t=d
t
1. Calculate the missing value for each of the following. Show equation, substitution/work and answer,
including correct units. You may use m/s or km/h according to the values given in the equation. Don’t
forget you cannot work in minutes.
a.
displacement = 15.6 m
time = 3 s
velocity = ?
b.
displacement = 357.5 km
time = 6.5 h
velocity = ?
c.
displacement = 22.6 m
time = ?
velocity = 5.65m/s
d.
displacement = ?
time = 3.25 h
velocity = 75 km/h
e.
displacement = 24 km
time = ?
velocity = 32 km/h
f.
displacement =?
time = 8 s
velocity = 60m/s
Word Problems: Show equation, substitution/work and answer, including correct units.
Formulas
v=d
t
d=v x t
t=d
t
1. A woman wants to paddle 420 m across a lake in her kayak. If she paddles at 2.8 m/s, how long will it take
her to cross the lake?
2. A cyclist rides west at 14 m/s, how long would it take her to travel 980 m?
3. A cheetah runs at a velocity of 30 /s [E]. If it runs for 8.5 s, what it it’s displacement?
4. The Austrailian dragonfly can fly at 16 m/s. How long does it take to fly 224 m?
5. The Skyride gondola at Grouse Mountain in North Vancouver takes 8 min to go up the 3 km mountain.
What is the average velocity of the gondola?
6. Due to plate tectonics, the North American and European continents are drifting apart at an average speed
of about 3 cm per year. At this speed, how long (in years) will it take them to drift apart by 2400 m?
7. Convert 25 m/s into km/h.
8. Convert 50 km/h into m/s
9. A dragster heading north, reaches a velocity of 628 km/h from rest in 3.72s. How far did it travel in that
time?