Hi I need answers to these questions for my assessment:

1. The common name for the force used to crush cans is the __________ force. Question 1 options: Stress or Pressure Shearing Tension Turbulent Strong Nuclear

2. Which force exists as far as we know? Question 2 options: Temporal Inversion Weak Nuclear Strong Gravitational Nuclear Magnetic

3. Which force has a very limited range (only in the nucleus) and attracts all nuclear particles to all nuclear particles (proton - proton, proton - neutron, neutron - neutron). Question 3 options: Electric Magnetic Weak Nuclear Gravitational Strong Nuclear

4. A bicycle helmet helps to save lives mainly by: Question 4 options: reducing the impulse or jerk acting on the cyclist during the impact. reducing the force of the impact by increasing the time of the impact. reducing the momentum of the cyclist. decreasing the pressure of the impact by distributing the force over a larger surface area.

5. Which of the following has the most inertia? Question 5 options: a 3 tonne packaderm at rest and asleep on the savannah plains. a 5 kg ornithopter flying at 20 m/s a 250 kg feline sprinting through the jungle at 15 m/s a 50 kg hominid jogging at 5 m/s

6. According to Newton's Second Law the acceleration of an object varies: Question 6 options: inversely with force and directly with mass directly with force and inversely with mass inversely with force and mass directly with force and mass

7. A 50 kg skater girl is standing on a skateboard which is at rest. She jumps forwards by pushing backwards with 100 N on her 2 kg skate board. According to Newton's Third Law the skate board will: Question 7 options: will accelerate backwards with the same amount of force. accelerate backwards with the same acceleration as the skater girl. will remain at rest. also accelerate forwards.

8. How do lubricants reduce friction?

Question 8 options: They act as a super adhesive to ensure there is a strong connection between the two surfaces to increase the normal force and the amount of friction. They act as a solvent and liquify the surfaces allowing them to move freely. They convert static protons into kinetic protons which causes proticity (similar to electricity) to flow through the surface and shocks organisms causing them to fall. They act as intermediaries between the surface protons and are free to move unlike the surface protons which are rigid, so they move when a force is applied to them.

9. On the planet Earth where g = 9.8 N/kg, which is more massive?

Question 9 options: 1 ton of uncut diamonds 1 tonne of fluffy feathers 1000 g of gold nuggets 100 kg of bulky, blocky bricks

10. Which statement is true regarding the force of friction? Question 10 options: Friction causes surfaces to become cool. Static Friction is stronger than Kinetic Friction. Friction makes it difficult to walk up steep hills. Friction is a manifestation of the gravitational force.

11. When you climb a steep hill you must make use of the: Question 11 options: kinetic friction force normal force static friction force force of gravity

12. Weight is equal to the: Question 12 options: force of gravity acting on a object. feelings of disappointment we may feel on any given day. normal force of the ground pushing perpendicular to the friction force. mass of an object.

13. When a baseball player slides into second base which force must they use to avoid going past the bag and being tagged out by the other team? Question 13 options: static friction force strong nuclear force base force kinetic friction force

14. Determine the acceleration of the system shown below. The coins have masses of 6.92 g and 3.95 g respectively.

+ T T M m + N A D + CANADA 2017 DOLLAR 6.92 g 3.95 g