Velocity, Acceleration, Force, Density Problems
1. What is the velocity of a rocket that travels 9000 meters in 12.12 seconds?
V=d/t
d = 9000 m
V = 9000 m / 12.12 sec
V = 742.6 m/s
t = 12.12 sec
2. What is the speed of a jet plane that travels 528 meters in 4 seconds?
V=d/t
V = 528 m / 4 sec
V = 132 m/s
d = 528 m
t = 4 sec
3. The space shuttle Endeavor is launched to altitude of 500 km above the
surface of the earth. The shuttle travels at an average rate of 700 m/s. How
long will it take for Endeavor to reach its orbit?
t = d /v
t = 500 km
0.7 km/s
t = 714 sec
v = 0.7 km/s
d = 500 km
4. A trip to cape Canaveral, Florida takes 10 hours. The distance is 816 km.
Calculate the average velocity.
V=d/t
V = 816 km / 10 hrs
V = 81.6 km/hr
d = 816 km
t = 10 hours
5. How far (in km) will you travel in 3 minutes running at a rate of 6 m/s?
D=vxt
D = (6 m/s) (180 sec)
D = 1080 m
D = 1.08 km
v = 6 m/s
t = 180 sec
6. A meteoroid changed velocity from 1.0 km/s to 1.8 km/s in 0.03 seconds.
What is the acceleration of the meteoroid?
A = (vf – vi)
t
Vf = 1.8 km/s
A = (1.8 km/s – 1.0 km/s)
0.03 sec
A = 26.67 km/s2
Vi = 1.0 km/s
t= 0.003 sec
Velocity, Acceleration, Force, Density Problems
7. In 0.5 seconds, a projectile goes from 0 to 300 m/s. What is the acceleration
of the projectile?
A = (vf – vi)
t
Vf = 300 m/s
Vi = 0 m/s
t= 0.5 sec
A = (300 m/s – 0 m/s)
0.5 sec
A = 600 m/s2
8. A dragster in a race accelerated from stop to 60 m/s by the time it reached
the finish line. The dragster moved in a straight line and traveled from the
starting line to the finish line in 8.0 sec. What was the acceleration of the
dragster?
A = (vf – vi)
t
Vf = 60 m/s
Vi = 0 m/s
t= 8.0 sec
A = (60 m/s – 0 m/s)
8.0 sec
A = 7.5 m/s2
9. What force is required to accelerate an object having a
mass of 3 kg at 5 m/s2?
F=mxa
m = 3 kg
a = 5 m/s2
F = (3 kg ) (5 m/s2)
F = 15 N
10. What is the mass of an object which is accelerated at 10 m/s2 due to a force
of 75 newtons?
m=F
a
m = 75 N
10 m/s2
m = 7.5 kg
F = 75 N
a = 10 m/s2
Velocity, Acceleration, Force, Density Problems
11. What would be the acceleration of an object with a mass of
20.0 kg when hit with a force of 100. N?
a=F
m
F = 100 N
m = 20.0 kg
a = 100 N
20.0 kg
a = 5 m/s2
12. What is the volume of a tank that can hold 18 754 Kg of methanol whose
density is 0.788g/cm3?
V=m
m = 1.8754 x 107 g
D
V = 1.8754 x 107 g
0.788 g/cm3
D = 0.788 g/cm3
V = 2.38 x 107 cm3
13. What is the density of a board whose dimensions are 5.54 cm x 10.6 cm X
199 cm and whose mass is 28.6 Kg?
D=m/V
D = 28,600 g
1.17 x104 cm3
D = 2.4 g /cm3
14. What is your favorite color?
15. When is your date of Birth?
m= 2,8600 g
v = 1.17 x104 cm3