Answer to Question #148750 in Physics for Modou Lamin Gassama

Question

Instructions: Show all your work & steps clearly
All figures/answers must be expressed in SI Units
Try to use the 4 steps of solving questions: Data, Formula, Sketch/Diagram & Free body
diagram (if applicable)
Explain steps when doing calculation.
8. A 970-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 25.0 m/s. What is the average force exerted on the car during this time?
9. An object has a kinetic energy of 275 J and a momentum of magnitude 25.0 kg ? m/s. Find the :
a. speed and
b. mass of the object.
10. A rifle with a weight of 30 N fires a 5.0-g bullet with a speed of 300 m/s.
a. Find the recoil speed of the rifle.
b. If a 700-N man holds the rifle firmly against his shoulder. Find the recoil speed of the man and rifle

Answer 1

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