physics

which equation can be used to calculate mechanical advantage?

• M.A=Load/Effort

• M.A = Effort/Load

• M.A=

  (Load/Effort) X 100%

• M.A=

  (Effort/Load) X 100%

The figure shows a displacement time graph. what is the graph showing?

• uniform acceleration

• uniform displacement

• uniform velocity

• constant displacement

the figure shows a velocity time graph. what does the graph AB shows?

• constant velocity

• uniform velocity

• uniform acceleration

• uniform displacement

the figure shows forces acting on a car. which force is a vertical force?

• thrust

• drag

• friction

• weight

the figure shows magnet pointers in a magnet field. what are the poles X and Q?

• X is the south pole

• Q is the North pole

• X is the neutral point

• Q is the South pole

the figure shows a block and tackle pulley system? what is the velocity ratio of the system

• 1

• 2

• 3

• 4

the figure shows a graph of a jouney of a car. which section shows zero acceleration?

• A

• B

• C

• A and C

The figure shows a motion graph of a car. which section shows uniform decelerations?

• A and B

• A

• B

• C

The figure shows a motion graph of a car. which section shows uniform accelerations?

• A and B

• A

• B

• C

The figure shows compasses placed in the magnet field lines of a magnet. which pointer is wrong?

• A

• B

• C

• D