Follow the rules of significant digits as you solve these problems. Answer in this form:
231.5 kg or 345.6 kg-m/s^2
No grade for this. However you should keep a pencil and paper nearby to record topics that you will need help with. Plan to ask those questions between now and the exam.
If Jeff ran a 731 m race in 17 s, what was his average speed?
Back to Jeff. If he accelerated uniformly from rest for the entire 17 seconds instead of running at constant speed, what was his speed at the end of the race?
Back to Jeff. Convert the final speed from 2 into mph given that 1 inch equals 2.54 cm (exactly).
A car that travels 565 meters in 7 seconds is traveling at what speed?
A runner who increases speed from 2 m/s to 17 m/s in 3.0 seconds is accelerating at what rate?
A train moves at 70. m/s. How long does it take the train to travel a distance of 3200 meters?
What is the acceleration where an 18.0 N net force acts on a 3.0 kg mass?
What is the mass where a 30.0 N net force produces an acceleration of 5 m/s/s?
Taking the acceleration of gravity as 9.8 m/s/s, find the weight of an 8.00 kg mass on earth.
A man weighing 500 N stands on a rock. What force does the man exert on the rock?
25 identical steel discs have a total mass of 157.8956 kilograms. What is the average mass of a disc?
What is the area of a rectangle 1.0500 m by 340 m ?
Two pieces of metal are seperately massed then combined with one another. If the first is massed to be 21.890 kg and the second, on a different balance 104.0 kg, what should be recorded as the sum of the two masses?