Question

please answer my 2nd question​

Answer 1

Answer:

2. 40 kg.m/s

3. Acceleration due to gravity (g)

Explanation:

2. If mass of an object is 20kg and is moving with velocity 2 m/s then find its momentum.

Momentum of an object is defined as the product of mass and velocity. Mathematically,

$\bigstar \; \boxed{\rm { p = mv } }$

• p denotes momentum
• m denotes mass
• v denotes velocity

Substitute the values,

$\longrightarrow \rm {p = 20 \; kg \times \; 2 \; m \: s^{-1} }$

$\longrightarrow \bf {p = 40 \; kg.\; m \: s^{-1} }$

∴ The momentum of the object is 40 kg.m/s.

3. Weight is equal to the product of mass and?

Weight of an object is defined as the product of its mass and acceleration due to gravity. Mathematically,

$\bigstar \; \boxed{\rm { W = mg } }$

• W denotes weight
• m denotes mass
• g denotes acceleration due to gravity

$\underline{ \qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad}$

Extra Information :

• Momentum of the object is the product of mass and the velocity.
• Momentum is a vector quantity.
• Its SI unit is kg.m/s.
• Weight is nothing but the force with which it is attracted towards the centre of the earth.
• It's also the product of mass and acceleration due to gravity.
• Its SI unit is Newton (N).

Answer 2

2. p = mv = 20 kg · 2 m/s = 40 kg m/s

3. W = mg, i.e. weight is the product of mass of particle and acceleration due to gravity.