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Citrus2011 [14]

3 years ago

14

Dalvin pushed a 20kg obiect a distance of 10 meters in 30 seconds. He pushed a 40kg object a distance of 5 meters in 30 seconds.

What can you INFER about force and mass from the scenario?

1 answer:

Ksju [112]3 years ago

7 0

Answer:

Explanation:

The force applied on a body is given as:

Force = mass x acceleration

First scenario;

Mass of object = 20kg

distance = 10m

time = 30s

Second scenario;

Mass of object = 40kg

distance = 5m

time = 30s

speed 1 = $\frac{distance}{time}$ = $\frac{10}{30}$ = 0.33m/s

speed 2 = $\frac{distance}{time}$ = $\frac{5}{30}$ = 0.167m/s

The first scenario;

F = 20 a

Second scenario;

F = 40 a

Momentum of 1 = mass x velocity = 20 x 0.33 = 6.6kgm/s

Momentum of 2 = mass x velocity = 40 x 0.167 = 6.68kgm/s

Force = $\frac{m(v-u)}{t}$

m(v-u) = momentum

From this scenario, the first body has a lesser force and mass compared to the second one because it has a slightly higher momentum.

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Data provided in the question:

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