Question

please tell me correct answer​

Answer 1

Question 1

• Mass = 0.5 kg
• Initial Velocity = 30 m/s
• Final Velocity = -20 m/s
• Impulse = ?

✭ According to the Question :

➞ Impulse = Change in Momentum

➞ Impulse = P₁ - P₂

➞ Impulse = mu - mv

➞ Impulse = (0.5 × 30) - (0.5 × -20)

➞ Impulse = 15 - (-10)

➞ Impulse = 15+10

➞ Impulse = 25 Ns

∴ The impulse is 25 Ns

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Question 2

• Mass = 100 g
• Acceleration = 0.2 m/s
• Force Applied = ?

✭ According to the Question :

➞ Force = Mass × Acceleration

• Mass = 100 g = 100/1000 = 0.1 kg
• Acceleration = 0.2 m/s

➞ Force = 0.1 × 0.2

➞ Force = 0.02 N

∴ The force applied is 0.02 N