The temperature of a 2.0-kg increases by 5*c when 2,000 j of thermal energy are added to the block. what is the specific heat of the block?

To calculate the specific heat capacity of an object or substance, we can use the formula

c = E / m△T

Where
c as the specific heat capacity,
E as the energy applied (assume no heat loss to surroundings),
m as mass and
△T as the energy change.

Now just substitute the numbers given into the equation.

c = 2000 / 2 x 5
c = 2000/ 10
c = 200

Therefore we can conclude that the specific heat capacity of the block is 200 Jkg^-1°C^-1

Velocity is the speed of an object in a certain direction so you'd need to know speed and direction