Question

*PLZ HELP IT'S DUE IN 2HRS*
A cart with a mass of 50 kg is traveling at 3 m/s and speeds up to 15 m/s in 15 seconds. (Intro to GUESS method and acceleration) What is the net force on the cart during this time?

Answer 1

Given :

• Initial velocity (u) = 3 m/s
• Final velocity (v) = 15 m/s
• Time (t) = 15 seconds
• Mass (m) = 50 kg

To find :

• Acceleration (a) &
• Force (F)

According to the question,

→ v = u + at

Where,

• v stands for Final velocity
• u stands for Initial velocity
• t stands for Time
• a stands for Acceleration

→ Substituting the values,

→ 15 = 3 + a × 15

→ 15 - 3 = 15a

→ 12 = 15a

→ 12 ÷ 15 = a

→ 0.8 = a

.°. Acceleration is 0.8 m/s².

Now,

→ Force = Mass × Acceleration

Or,

→ F = ma

→ Substituting the values,

→ F = 50 × 0.8

→ F = 40 N

So,the force is 40 Newton.

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