A ship begins a journey at 4 m/s. It accelerates at the rate of 1.6 m/s2. What is its final velocity after 7 seconds?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Which of these activities increases the amount of carbon in the atmosphere?