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What is maximum height in projectile motion.
1. a) Calculate the area of a triangle whose vertices are given by (3,-1, 2), (1, -1,2)
and (4,-2, 1).
b) Determine the unit tangent vector to the following curve at t = 1
-2i+(-4))+ (5t-Pk
A motorboat starting from a dead stop accelerates at a constant 1.7 m/s2 for 2.5 s, then very rapidly roars up to 4.4 m/s2 and holds it constant for 4.0 s. What is its average acceleration over the first 4.9 s of motion?
What is its speed after 6.5 s?
Next the boat decelerates to a stop in 19.0 s at a constant rate. What is the boat's acceleration during this last portion of the trip?
An object moving with constant acceleration has velocity v = 30.8 m/s when it is at x = 3.6 m and v = 55.1 m/s when it is at x = 6.4 m. What is its acceleration?
A stone of mass 1kg is thrown at 10m/s upward Making an angle 37° with the horizontal from a building thta is 20m high.using law of conservation of energy . calculate the speed when the stone hits the ground.
A projectile motion us given by y=√3/3x - 4/3x^2 where (x,y) is the coordinate of the projectile at any time t seconds. Both x&y are measured in meters.
a) find the range of the projectile
b) will the projectile hit the too of the cliff 50m high?
c) what is the coordinate of the projectile at t=6seconds
scientific notation: 57540000
50j work must be done to lift a vase from the ground up to the shelf. (1)how much potential energy does the vase have when it is on the shelf? (2)if the vase falls from the shelf how much kinetic energy does it have just before it hits the ground? (3)what happens to this energy after the vase has hit the ground? (4)state the law of conversation of energy?
We want to pump water from a well 20 m deep at the rate of 500 L/min. Assuming 60 % pump efficiency, how powerful should the pump motor be?
A 50 g bracelet is suspected of being gold plated lead instead of pure gold, when it is dropped into a full glass of water, 4.0 cm3 of water overflows. Is the bracelet pure gold? If not, what is the percentage of gold in it? Density of gold is 19 g/cm3 density of lead is 11 g/cm3
