## Physics | Study Mode

Question 1
A
upthrust only
B
upthrust and the ball's weight
C
the ball's weight and viscous force
D
upthrust, the ball's weight and viscous force
Explanation.

No official Explanation yet!

Question 2
A
$$m \omega^2 r$$
B
$$\frac{mv^2}{r}$$
C
$$m \omega r$$
D
$$\frac{mv^2}{r^2}$$
Explanation.

No official Explanation yet!

Question 3
A
kinetic
B
potential
C
thermal
D
electrical
Explanation.

No official Explanation yet!

Question 4
A
is zero
B
increases
C
decreases
D
remains constant
Explanation.

No official Explanation yet!

Question 5
A
first law of motion
B
second law of motion
C
third law of motion
D
law of universal gravitation
Explanation.

No official Explanation yet!

Question 6
A
speed and displacement
B
mass and force
C
dislacement and acceleration
D
momentum and length
Explanation.

No official Explanation yet!

Question 7
A
manufacturing of rain coats
B
production of palm oil
C
floating of a needle on water
D
washing of plates with soapy water
Explanation.

No official Explanation yet!

Question 8
A
1.00s
B
2.00s
C
2.18s
D
3.00s
Explanation.
T = $$\frac{2u}{g} = \frac{2 \times 10}{10} = 2s$$

Question 9
A
0.25ms-2
B
0.80ms-2
C
3.20ms-2
D
4.00ms-2
Explanation.
S = ut + $$\frac{1}{2} at^2$$

40 = 0 x 10 + $$\frac{1}{2}$$ x a x 102

50a = 40

a = $$\frac{40}{50}$$

= 0.8ms-2

Question 10
A
500.0g
B
400.0g
C
44.4g
D
25.0g
Explanation.
clockwise moment = Anti-clock wise moment

= M x 40 = 100 x 10

M = $$\frac{1000}{40}$$

= 25g

Question Map