Help!
1) A force of 3N acts as 90 degrees to a force of 4N. Find the magnitude and direction of their resultant, R.

2) A particle which is moving due east at 4ms^-1 changes direction and starts to move due south at 3ms^-1. Find the change in velocity.

3) Find the magnitude and direction of the increase in velocity when a body which has been moving south at 6.0 ms^-1 changes direction and move north west at 8.0 ms^-1.

Question

Help!
1) A force of 3N acts as 90 degrees to a force of 4N. Find the magnitude and direction of their resultant, R.

2) A particle which is moving due east at 4ms^-1 changes direction and starts to move due south at 3ms^-1. Find the change in velocity.

3) Find the magnitude and direction of the increase in velocity when a body which has been moving south at 6.0 ms^-1 changes direction and move north west at 8.0 ms^-1.

aaronq · Answer

1) use trig (or pythagorean theorem) |dw:1413136994564:dw|

2) again use trig|dw:1413137153124:dw|

3) trig again

anonymous · Answer

Thank you!