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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
You are trying to cross a river that flows due south with a strong current. You start out in your motorboat on the east bank desiring to reach the west bank directly west from your starting point. You should head your motorboat
In a northwesterly direction.
In a southwesterly direction.
Due west.
Due north.
A ball is thrown with a velocity of 20 m/s at an angle of 600 above the horizontal. What is the horizontal component of its instantaneous velocity at the exact top of its trajectory?
20 m/s.
17 m/s.
10 m/s.
0 m/s.
The acceleration of gravity on the Moon is only one-sixth of that on Earth. If you hit a baseball on the Moon with the same effort (and at the speed and angle) that you would on Earth, the ball would land
36 times as far.
One-sixth as far.
The same distance away.
6 times as far.
A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. A stop watch measures the stone's trajectory time from the top of the cliff to the bottom to be 4.3 s. What is the height of the cliff?
77 m.
22 m.
43 m.
91 m.
A rifle bullet is fired at an angle of 300 below the horizontal with an initial velocity of 800 m/s from the top of a cliff 80 m high. How far from the base of the cliff does it strike the level ground below?
140 m.
150 m.
130 m.
160 m.