0.000 s
Revise smart, understand Better
Select Lessons (39)
Dynamics: Newton’s Laws of Motion
ELECTRICITY: Current
ELECTRICITY: Current
ELECTRICITY: Resistance
Elasticity
Electric fields
Electromagnetism
Electromagnetism
Energy: Application And Uses
Experimental physics
Forces
Gravitational fields
Heat
Kinematics in Two Dimensions: Vectors, projectiles
Kinematics in one dimension
Linear Momentum
MOTION
MOTION
MOTION
MOTION
MOTION
MOTION: Circular
MOTION: Collision
MOTION: Inclined plane
MOTION: Simple harmonic motion (SHM)
Magnetism
Optics
PLASTICS
PRESSURE
Radioactivity
TEMPERATURE
The Laws of Thermodynamics
Units System
Units System
Units, dimensions and homogeneity
WAVES: Electromagnetic
WAVES: Electromagnetic
WAVES: Sound
5/36 MCQs for:
Kinematics in Two Dimensions: Vectors, projectiles
A boat, whose speed in still water is 8.0 m/s, is directed across a river with a current of 6.0 m/s. What is the speed of the boat as it crosses the river?
8.0 m/s.
6.0 m/s.
5.3 m/s.
10.0 m/s.
A jumper in the long-jump goes into the jump with a speed of 12 m/s at an angle of 200 above the horizontal. How far does the jumper jump?
15 m.
3.4 m.
6.2 m.
9.4 m.
At what angle should a water-gun be aimed in order for the water to land with the greatest horizontal range?
00.
300
450.
600.
A ball is thrown at an original speed of 8.0 m/s at an angle of 350 above the horizontal. What is the speed of the ball when it returns to the same horizontal level?
4.0 m/s
16 m/s.
9.8 m/s.
8.0 m/s.
A plane has an air speed of 200 m/s due North, and is in a wind of 50.0 m/s to the West. The plane's speed relative to the ground is:
150 m/s.
200 m/s.
206 m/s.
250 m/s.