C. Solve the following problems
9. A car has an initial velocity of 7.0m/s. If it accelerates at a constant rate of 2.0m/s2 for a period of 5 s, what is its velocity at the end of 5 seconds?
10. A marble is dropped from a 5-m high hanging cabinet. How long does it take for the marble to hit the ground? (use g = -10 m/s)
9. A car has an initial velocity of 7.0m/s. If it accelerates at a constant rate of 2.0m/s2 for a period of 5 s, what is its velocity at the end of 5 seconds?
10. A marble is dropped from a 5-m high hanging cabinet. How long does it take for the marble to hit the ground? (use g = -10 m/s)
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Answer:
1) 7m/s
2 1sec.
Explanation
just multiply it.