Question

A huge trolley having mass 2.50 x 104 kg and travels at an initial speed of 4.00 m/s. It
collides with another three trolleys having nearly identical masses and starts moving in
the same direction at 2.00 m/s. Find the trolley speed after the impact.
(a) 3.00 m/s
(b) 2.00 m/s
(c) 1.50 m/s
(d) 2.50 m/s​

Answer 1

Answer:

c) 1.50 m/s

Explanation:

Answer 2

Concept Introduction: There are many types of collision in Physics.

Given:

We have been Given:

$m1 = m2 = m3 = m4 = 2.50 \times {10}^{4} kg$

$v1 = 4m {s}^{ - 1}$

$v2 = v3 = v4 = 2m {s}^{ - 1}$

To Find:

We have to Find: Total speed after the collision.

Solution:

According to the problem,

$V = \frac{(m1v1 + m2v2 + m3v3 + m4v4)}{(m1 + m2 + m3 + m4)} \\ V = \frac{25 \times {10}^{4} }{ {10}^{5} } \\ V = 2.5m {s}^{ - 1}$

Final Answer: The total speed of the system is

$2.5m {s}^{ - 1}$

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