A mass of 1.0 kg is pushed against a spring with a spring constant of 25 N/m. As a result, the spring is compressed by 20 cm. The mass is then released. What is the amount of work required to compress the spring?
What will be an ideal response?
Question 2
You drive 6.00 km at 50.0 km/h and then another 6.00 km at 90.0 km/h. Your average speed over the 12.0 km drive will be
A) greater than 70.0 km/h.
B) equal to 70.0 km/h.
C) less than 70.0 km/h.
D) exactly 38.0 km/h.
E) cannot be determined from the information given, must also know directions traveled
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