Question

M 1 = 40 kg
U 1= 5m/s
M₂ = 60 kg
U 2 = 4 m/ s
v 1 = ?
v 2= ?​

Answer 1

Answer:

ANSWER

(a) The given time is of no consequences since ν

CM

fixed for all times.

=

8kg

(3)(−5cos37

o

)+(5)(0)

=1.5m/s

ν

CM

(y)=

m

1

+m

2

m

1

ν

1y

+m

2

ν

2y

=

8kg

(3)(−5sin37

o

)+(5×5)

=+2m/s

∴

ν

CM

=1.5

i

^

+2

j

^

m/s

(b) Since the collision occurs at the origin (

r

1

=0), the position of the centre of mass 2s later is

r

CM

=

r

1

+

ν

CM

t

ν

CM

t=−3

i

^

+4

j

^

m