-9.8 m/s^2 would be right.
Answer:
force = mass * acceleration
therefore the SI unit is kg*m/s2 or newton's
it's a vector quantity because it has both direction(acceleration) and size (mass)
When a motorboat passes by, a disturbance or vibration in the lake water is created which travels in all the directions. A water wave is a combination of longitudinal wave as well as transverse wave. If you are a particle of water in the lake, then you would be hit by nearby water particle which would set you in motion. you would travel up and down forming crest and trough and sideways. The energy would be transported forward, as you would collide with other particle and the wave moves forward. your position would not change. only the energy would be transported.
-- The volume of water is (1.5 m² x 7 m) = 10.5 m³
10.5 m³ = 10,500 liters
Water mass = (10,500 liters) x (1 kg/liter) = 10,500 kg.
-- "Force of gravity on the water"
= Weight of the water = (10,500 kg) x (9.8 m/s²) = 102,900 newtons
-- Pressure on the bottom of the tank =
(102,900 newtons) / (1.5 m²)
= 68,600 nt/m² = 68,600 pascal .