grrich2007
contestada

A baby carriage is rolling down a hill at 18 m/s. If the carriage has 90J of kinetic energy, what is the mass of the carriage? a. 5 kg b. 0.56 kg c. 10 kg d. 100 kg​

Respuesta :

am643698

Answer:

why did the parents let go of their child-

Explanation:

A 5 kg, because 90 / 18 is 5

Ritmeks

The mass of the carriage is 10 kg

The formular for kinetic energy

K.E= 1/2mv²

Kinetic energy= 90 joules

velocity= 18 m/s

mass= ?

90= 1/2 × mass × 18

90= 0.5 × 18 × mass

90= 9 × mass

mass= 90/9

= 10 kg

Hence the mass of the carriage is 10 kg

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