Answer:
The velocity and mass of the target ball are 1.6 m/s and 1.29 kg.
Explanation:
Given that,
Mass of softball = 0.220 kg
Speed = 5.5 m/s
(a). We need to calculate the velocity of the target ball
Using conservation of momentum



....(I)
The velocity approach is equal to the separation of velocity


(b). We need to calculate the mass of the target ball
Now, Put the value of v₂ in equation (I)



Hence, The velocity and mass of the target ball are 1.6 m/s and 1.29 kg.
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Particles transfer energy physically from one to the other either horizontally in a longitudinal wave, vertically in a transverse wave, or in circles in a surface wave. Waves can also be electromagnetic, which are always transverse and do not require a medium to propagate, like light waves traveling through space.
Answer:4m/s
Explanation:The car is moving with constant acceleration therefore average speed is equal to distance over time to find the distance covered we multiple the speed by the time which gives 20 metres meaning after every 20 metres it uses a speed of 2m/s so for 40 metres it's going to be 40 x2 over 20 giving us 4m/s
Because air and water have different density.
Air is less dense than water.
So, the light will bend towards normal.
Thus, the angle of refraction is smaller than angle of incidence.
This phenomena is known as refraction.