Question

ᴘʟᴇᴀsᴇ ʜᴇʟᴘ ǫᴜᴇsᴛɪᴏɴ 1) ᴄᴀʟᴄᴜʟᴀᴛᴇ ᴛʜᴇ ᴍᴏᴍᴇɴᴛᴜᴍ ᴏғ ᴀ ᴛᴏʏ ᴄᴀʀ ᴏғ ᴍᴀss 200ɢ ᴀɴᴅ ᴍᴏᴠɪɴɢ ᴡɪᴛʜ ᴀ sᴘᴇᴇᴅ ᴏғ 5 ᴍ/s ǫᴜᴇsᴛɪᴏɴ 2) ᴄᴀʟᴄᴜʟᴀᴛᴇ ᴛʜᴇ ᴍᴏᴍᴇɴᴛᴜᴍ ᴏғ ᴇʟᴇᴘʜᴀɴᴛ ᴏғ ᴍᴀss 200 ᴋɢ ᴀɴᴅ ᴍᴏᴠɪɴɢ ᴡɪᴛʜ sᴘᴇᴇᴅ ᴏғ 5 ᴍ/s ǫᴜᴇsᴛɪᴏɴ 3) ᴇxᴘʟᴀɪɴ ᴡʜʏ ɪᴛ ɪs ᴅᴀɴɢᴇʀᴏᴜs ᴛᴏ ᴊᴜᴍᴘ ᴏᴜᴛ ᴏғ ᴀ ᴍᴏᴠɪɴɢ ʙᴜs

Answer 1

ǫᴜᴇsᴛɪᴏɴ 1

• ᴄᴀʟᴄᴜʟᴀᴛᴇ ᴛʜᴇ ᴍᴏᴍᴇɴᴛᴜᴍ ᴏғ ᴀ ᴛᴏʏ ᴄᴀʀ ᴏғ ᴍᴀss 200ɢ ᴀɴᴅ ᴍᴏᴠɪɴɢ ᴡɪᴛʜ ᴀ sᴘᴇᴇᴅ ᴏғ 5 ᴍ/s

Aɳʂɯҽɾ

ＧＩＶＥＮ

• Mass (m) ➡ 200g
• Velocity (v) ➡ 5 m/s

ＴＯ ＦＩＮＤ

• Momentum (p)

Formula Used :-

$\boxed { \sf Momentum (p) = mass(m) \times velocity (v) }$

Substituting Values

☞ p ➡ 200 × 5

☞ p ➡ 1000 g

Therefore, we got Momentum 1000 g m/s ➠ 1 kg m/s

ǫᴜᴇsᴛɪᴏɴ 2

• ᴄᴀʟᴄᴜʟᴀᴛᴇ ᴛʜᴇ ᴍᴏᴍᴇɴᴛᴜᴍ ᴏғ ᴇʟᴇᴘʜᴀɴᴛ ᴏғ ᴍᴀss 200 ᴋɢ ᴀɴᴅ ᴍᴏᴠɪɴɢ ᴡɪᴛʜ sᴘᴇᴇᴅ ᴏғ 5 ᴍ/s

Aɳʂɯҽɾ

ＧＩＶＥＮ

• Mass (m) ➡ 200 kg
• Velocity (v) ➡ 5 m/s

ＴＯ ＦＩＮＤ

• Momentum (p)

Formula Used :-

$\boxed { \sf Momentum (p) = mass(m) \times velocity (v) }$

Substituting Values

☞ p ➡ 200 × 5

☞ p ➡ 1000 kg

Therefore, we got Momentum ➠ 1000 kg m/s

ǫᴜᴇsᴛɪᴏɴ 3

• ᴇxᴘʟᴀɪɴ ᴡʜʏ ɪᴛ ɪs ᴅᴀɴɢᴇʀᴏᴜs ᴛᴏ ᴊᴜᴍᴘ ᴏᴜᴛ ᴏғ ᴀ ᴍᴏᴠɪɴɢ ʙᴜs

Aɳʂɯҽɾ

It is dangerous to move out of a moving bus because the jumping man , who is moving with the high speed bus , when he moved out of the bus he will remain in motion and can be hamrmed by jumping out of a moving bus

So, we should not jump off a Moving bus.

Answer 2

Question 1)

• ᴄalculate the Momentum ᴏғ a toy car of mass 200 g moving with the speed of 5m/s.

Given :

• Mass = 200 g
• Speed = 5m/s
• momentum = ?

we know that,

$\underline{ \boxed{ \mathsf{Momentum (p) = mass(m) \times velocity(v)}}}$

• Converting 200 g into kg

⟹ 1 g = 1/1000 kg

⟹ 200 g = 200/1000 kg

⟹ 200 g = 2/10

⟹ 200 g = 0.2 kg

⟶ Momentum (p) = 0.2 × 5

⟶ Momentum = 1 kg m/s

So,

Momentum of toy car is 1kg m/s.

Question 2)

• Calculate the momentum of an elephant of mass 200kg moving with the speed of 5m/s.

Given :

• Mass = 200kg
• speed = 5m/s
• momentum = ?

• Momentum = mass × velocity

⟶ p = 200 × 5

⟶ p = 1000 kg m/s

So,

Momentum of elephant is 1000 kg m/s .

Question 3)

• Explain why it is dangerous to move out of a moving bus.

Answer :

It is dangerous to jump out of a moving bus becaus the bus is moving with high speed and If the person moves from the moving bus then , would tend to remain in motion even on falling to the ground and get hurt due to the resitance offered by ground.

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