Question

Solve using basic kinematics equations, thank you!

1. A skydiver, with an unopened parachute, free falls 400 feet in 5 seconds. Then she falls
another 400 feet in 20 seconds. What is her average speed for the entire fall?

2. In April of 2002, Deena Drossin from the USA set the 5 km world record for women at the
Carlsbad 5000. Over the length of the race she averaged 5.59284 m/s. What was her record
time in minutes and seconds?

3. A woman and her dog are out for a morning run to the local river, which is 4.0 km away.
The woman runs at 2.5 m/s. The excited dog runs back and forth at 4.5 m/s between his
owner and the river until the woman reaches the river. How far does the dog run?

4. A speedboat undergoes a change in speed of 20 miles/hr in 8 seconds. What is the
acceleration of the speedboat in ft/s2?

Answer 1

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