Question

just looking for the answers

Question 5. If two particles have equal Kinetic energies, are their momenta equals? (K = my? 12. p = my ). a) Yes, always b) No, never c) Yes, as long as their masses are equal d) Yes, if both their masses and directions of motion are the same e) Yes, as long as they move along parallel lines Question 6. Which force is responsible for holding a car in an unbanked curve level road)? A) The car's weight B) The force of friction C) The reaction force to the car's weight D) The vertical component of the normal force E) The horizontal component of the normal force Question 7. A breakneck skier Jackson (80 kg), races down a slope at a constant speed of 45 miles per hour. Acceleration of the skier is a) 8.9 m/s b) 4.2 m/s c) 784 m/s d) 9.8 m/s? e) None of these 250

Answer 1

5-d)Yes, if both their masses and directions of motion are the same

6-B)The force of friction

7-e)None of these(it will be 0 because speed in a direction is nothing but velocity and since velocity is constant so acceleration should be 0)