1. A cube has a side of 5 cm. It has a mass of 250 grams.
The density of the cube is?
2. You are using 40 N of force to push an empty cart down
the school hall. Your friend, who weighs 800 N, jumps on the
cart and wants to be taken for a ride. You push your friend
down the hall for 20 meters before being caught by the
Principal. How much work did you do pushing your friend on
the cart?
3. A substance has a density of 2.50 g/cm3. What is the
mass of 15.0 mL of this substance?
4. How much work is done when a body builder holds 500N?
5. Miss Bird slaps a kid that has a mass of 120kg straight
out of his chair. The student flew through the air with an
acceleration of 3 m/s2. With what force did she smack the
student?
6. A child has a weight of 145N. What is the child's mass
rounded to the nearest tenth?
7.
The mass of a rock is 15g.
This is an image of the water
is displaces. What is the
density of the rock?
8. An object with a mass of 16 kg experiences a force of
11.2N. What is the acceleration of the object?
9. An object with a force of 8 N on it is accelerating at
4 m/s2. What is the mass of the object?
10. A force of 800 Newtons is needed to push a car across a
lot. Two students push the car 40 meters. How much work is
done?
11. What is the weight of an object with a mass of 20 g?
12. Calculate the speed for a car that went a distance of 125
kilometers in 2 hours time.
13. A baseball is thrown a distance of 20 meters. What is its
speed if it takes 0.5 seconds to cover the distance?
14. How much time does it take for a bird flying at a speed
of 45 kilometers per hour to travel 270km?
15. A comet is cruising through the solar system at a speed
of 50,000 kilometers per hour for 4 hours time. What is the
total distance traveled by the comet during this time?
16. If Steve throws the football 96 meters in 3 seconds,
what is the average speed of the football?
17. If it takes Ashley 3 seconds to run from the batters box
to first base at an average speed of 6.5 meters per second,
what is the distance she covers in that time?
18. Bart ran 5000 meters from the cops and an average
speed of 6 meters/second before he got caught. How long
did he run?
19. If Justin races his Chevy S-10 down Highway 37 for
2560 meters in 60 seconds, what is his average speed?
20. A block of aluminum occupies a volume of 15.0 mL and
weighs 40.5 g. What is its density?
21. A rectangular block of copper metal weighs 1896 g. The
dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm.
From this data, what is the density of copper?
22. A rectangular block of copper metal weighs 1896 g. The
dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm.
From this data, what is the density of copper rounded to the
nearest tenth place?
23. What volume of silver metal will weigh exactly 2500.0 g.
The density of silver is 10.5 g/cm3.
24. You push a friend sitting on a swing. She has a mass of
50 kg and accelerates at a rate of 4 m/s2. Find the force
you exerted.
25. You give a shopping cart a shove down the aisle. The cart
is full of groceries and has a mass of 18 kg. The cart
accelerates at a rate of 3 m/s2. How much force did you
exert on the cart?
26. A worker drops his hammer off the roof of a house. The
hammer has a mass of 9 kg, and gravity accelerates it at the
usual 9.8 m/s2. How much force does the earth apply to the
hammer?
27. Amy uses 20N of force to push a lawn mower 10 meters.
How much work does she do?
28. How much work does an elephant do while moving a circus
wagon 20 meters with a pulling force of 200N?
29. Tommy does 15 Joules of work to push the pencil over 1
meter. How much force did he use?
30. The baseball player does 1234 Joules of work when
hitting a baseball into left field. Assuming the baseball
landed 100 meters away from home plate, how much force
did the player use to hit the ball?