11. A woman requires more calcium in her diet when she is pregnant. Which statement explains why?
A bone growth in the fetus
B muscle growth in the fetus
C production of haemoglobin in the fetus
D to provide energy for the fetus

1. you serve a volleyball with a mass of 2.1 kg. the ball leaves your hand with a speed of 30 m/s. the ball has energy. calculate it. 2. a baby carriage is sitting at the top of a hill that is 21 m high. the carriage with the baby weighs 12 n. the carriage has energy. calculate it. 3. a car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. the car has . calculate it.