Question

calculate the force required to a car a velocity of 50 metre/s in 10 seconds starting from rest the mass of the car is 1500 kg​

Answer 1

Answer:

7500 Newton.

Step-by-step explanation:

Given:

• Mass (m) = 1500 kg
• Final velocity (v) = 50 m/s
• Initial velocity (u) = 0 m/s [As started from rest]
• Time (t) = 10 seconds

To find:

• Force applied (F) = ?

Solution:

We know that Force (F) = mass (m) × acceleration (a).

We also know that acceleration = (v - u)/t.

$\:\:\:\:\:\:\:\:\:\:\:$ Here, v = final velocity

$\:\:\:\:\:\:\:\:\:\:\:$ u = initial velocity

$\:\:\:\:\:\:\:\:\:\:\:$ t = time

So, our final formula for force is F = m × (v - u)/t.

[Substitute all given values]

$:\implies\:\sf{F\:=\:1500\:\times\:(\dfrac{50\:-\:0}{10})}$

$\:$

$:\implies\:\sf{F\:=\:1500\:\times\:\cancel{\dfrac{50}{10}}}$

$\:$

$:\implies$ F = 1500 × 5

$\:$

$\large:\implies\underline{\boxed{\sf{\therefore\:Force\:applied\:is\:7500\:N}}}$

Answer 2

Step-by-step explanation:

$\underline{\bigstar\:\textsf{Given:}}$

• Final velocity (v) = 50 m/s
• Time (t) = 10 s
• Initial velocity (u) = 0 m/s
• Mass (m) = 1500 kg

$\underline{\bigstar\:\textsf{To\:find:}}$

• Force (F) = ?

$\underline{\bigstar\:\textsf{Solution:}}$

By second laws of motion we comes to know that $\blue{\sf{Force\:=\:ma}}$

We don't know acceleration, but we know that $\green{\sf{acceleration\:=\:\dfrac{v\:-\:u}{t}}}$

$\longmapsto\:\sf{a\:=\:\dfrac{50\:-\:0}{10}}$

$\:$

$\sf{\underline{\underline{\therefore\:Acceleration\:=\:5\:m/s^2}}}$

$\:$

Now, we know mass and acceleration put values in the formula of force.

$\:$

$\longmapsto$ F = 1500 × 5

$\:$

$\sf{\underline{\underline{Hence,\:force\:is\:7500\:Newton. }}}$