Question

What is the kinetic energy of a 1 000-kg truck moving at 1.5 m/s? ​

Answer 1

Answer:

K.E = 1/2 mv²

m → mass = 1000kg

v → velocity squared = 1.5m/s

Square of velocity = 1.5m/s × 1.5m/s = 2.25 m²/s².

K.E → 1/2 × 1000 × 2.25m²/s²

kg/m/s = J (joule)

= 1125 J

Answer 2

Answer:

Given :-

• A truck of 1000 kg moving at 1.5 m/s.

To Find :-

• What is the kinetic energy ?

Solution :-

Given :

• Mass = 1000 kg
• Velocity = 1.5 m/s

According to the question by using the formula we get,

$\implies \sf\boxed{\bold{Kinetic\: Energy =\: \dfrac{1}{2}mv^2}}$

where,

• m = Mass
• v = Velocity

So, by putting those values we get,

$\implies \sf Kinetic\: Energy =\: \dfrac{1}{2} \times 1000 \times (1.5)^2$

$\implies \sf Kinetic\: Energy =\: \dfrac{1}{2} \times 1000 \times (1.5 \times 1.5)$

$\implies \sf Kinetic\: Energy =\: \dfrac{1}{2} \times 1000 \times 2.25$

$\implies \sf Kinetic\: Energy =\: \dfrac{1}{2} \times 2250$

$\implies \sf Kinetic\: Energy =\: \dfrac{2250}{2}$

$\implies \sf\bold{\underline{Kinetic\: Energy =\: 1125\: J}}$

$\therefore$ The kinetic energy is 1125 J .