Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
p6 fa4
fa4
| Question | Answer |
|---|---|
| The weight of an object on the moon is one-sixth of its weight on Earth. The ratio of the kinetic energy of a body on Earth moving with speed V to that of the same body moving with speed V on the moon is: | 1;1 |
| Which of the following vector operations is involved in calculation for work? | dot product |
| An object is constrained by a cord to move in a circular path of radius 0.5m on a horizontal frictionless surface. The cord will break if its tension exceeds 16 N. The maximum kinetic energy the object can have is: | 4J |
| When a certain rubber band is stretched a distance x, it exerts a restoring force of magnitude F = Ax, where A is a constant. The work done by a person in stretching this rubber band from x = 0 to x = L, beginning and ending at rest, is: | AL2/2 |
| The weight of an object on the moon is one-sixth of its weight on Earth. The ratio of the kinetic energy of a body on Earth moving with speed V to that of the same body moving with speed V on the moon is: | 1;1 |
| A 70-N force is applied horizontally to a 10-kg block of wood at rest for a displacement of 200-m across a frictionless surface. How much work is done by the force? | 14000j |
| Two physics students, Pharsa and Kaja, are in the weightlifting room. Pharsa lifts the 100-pound barbell over her head 10 times in one minute; Kaja lifts the 100-pound barbell over his head 10 times in 10 seconds. Which student does the most work? | Equal work |
| A man pulls a sled along a rough horizontal surface by applying a constant force F at an angle θ above the horizontal. In pulling the sled a horizontal distance d, the work done by the man is: | Fdcostheta |
| An 8-N block slides down an incline. It has an initial speed of 7m/s. The work done by the resultant force on this block is: | impossible |
| What is the definition of mechanical energy? Group of answer choices The energy stored in chemical bonds The energy of an object at rest The energy associated with heat transfer The energy associated with the motion of an object | The energy associated with the motion of an object |
| Which of the following terms refers to the ability to do work? | Energy |
| A machine does 1000 J of work in 5 seconds. What is the power output of the machine? | Mali raw 200, lmfao 5000w? |
| How does the height of an object affect its potential energy? | The higher the object, the higher its potential energy |
| Which of the following is a scalar quantity? | work |
| What is the relationship between power and time? | Power is the rate at which work is done |
| What is the difference between work and power? | Work is the energy transferred over time, while power is the rate at which energy is transferred |
| Which of the following statements accurately describes momentum? Group of answer choices Momentum depends only on an object's mass. Momentum is a scalar quantity. Momentum depends only on an object's velocity. Momentum is a vector quantity. | Vector quantity |
| How does the concept of impulse help explain the effect of airbags in car crashes? | Airbags increase the time of impact, reducing the force exerted on the occupants. |
| What is the unit of measurement for momentum? | kgm/s |
| What is the relationship between force and time in the context of impulse? | Force is inversely proportional to time. |
| A crate of mass 44 kg is pushed along a floor with a force of 35 N for a distance of 3.1 m. Calculate the work done. | 286.2 |
| How far must a 10 N force pull a 42 g toy car if 32 J of energy are transferred? | 62.5 |
Created by:
palpakan56