Question

Spaceship 1 and Spaceship 2 have equal masses of 150 kg. Spaceship 1 has

a speed of 0 m/s, and Spaceship 2 has a speed of 6 m/s. They collide and
stick together. What is their speed?
O
A. 900 m/s
O
O
B. 3 m/s
c. O m/s
O
D. 6 m/s

Answer 1

3m/s

Step-by-step explanation:

appexxx

Answer 2

B. 3 m/s

Step-by-step explanation:

We can solve the problem by using the law of conservation of momentum; in fact, the total momentum before and after the collision must be conserved. So we can write:

`m_1 u_1 + m_2 u_2 = (m_1 +m_2)v`

where:

m1 = 150 kg is the mass of spaceship 1

m2 = 150 kg is the mass of spaceship 2

u1 = 0 m/s is the initial velocity of spaceship 1

u2 = 6 m/s is the initial velocity of spaceship 2

v is the velocity of the two ships after they collide and stick together

Solving for v, we find:

`v=(m_1 u_1 + m_2 u_2)/(m_1+m_2)=(0+(150)(6))/(150+150)=3 m/s`