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A stone is thrown horizontal with an initial velocity of 20m/s from a top of clift with a height of 60m. Determine the range
If a projectile remains long enough in the air, the horizontal component "Vx" of its velocity will eventually be (practically) zero and the vertical component "Vy" will be its terminal velocity "Vt" in air. Consider a parachutist jumping off a plane which was flying straight and
level at a constant speed, "u"
With the aid of diagram, explain what will happen to its horizontal velocity "Vx" ,and vertical velocity "Vy" ,and terminal velocity, "Vt" before and after the parachutist open its parachute.
Hi, can anyone work this out for me? I have a compressed air cannon that fires a standard golf ball.
Using a high speed camera and tracking software the ball exits the barrel at 550 Kph.
When shot directly up it takes 19 seconds for the ball to land again, how high did the ball get?
- a car accelerates with constant acceleration from a standstill to the speed v0 = 90km / h on a straight line for a period of time t1. the velocity from t = 0 to t = t1 is given by:
V(t)= v0(t/t1)^2
how big is the car's average speed during this time?
2, a particle moves at a constant speed u on a circular path. The period of the movement is t1. what is the amount of the particle's average acceleration from time t = 0 to t = (3/2)t1
A stone is dropped by a person from the top of a building which is 200m tall at the same time another stone was thrown upwards with a velocity of 50m/s by a person standing at the foot of the building find the time the stones meet
When the Mars Exploration Rover was fully assembled, its mass was 180 kg. The acceleration due
to gravity at the surface of Mars is 3.68 m/s2and the radius of Mars is 3390 km.
(a) What was the rover s weight when it was at sea level on Earth?
(b) What is the rover s weight on the surface of Mars?
(c) The entry phase began when the spacecraft reached the Mars atmospheric entry interface
point at 3522 km from the center of Mars. What was the rover’s weight at that point?
1. The Kilmarnock Campus tug of war team pulls with a force of 400N while the Ayr Campus team pulls with a 300N force. What is the size of the resultant force and which team wins?
1. A car (mass 1000kg) engine produces a force of 2000N. There is a frictional force of 100N acting against the car (air resistance is negligible). Calculate the resultant force and hence the cars acceleration.
2. A parachutist and his parachute have a total mass of 100kg. At a certain point air resistance is measured as 400N
a. Calculate the combined weight?
b. Determine the resultant force & direction.
c. Calculate the acceleration.
1. A car accelerates at a rate of 0.4ms-2 due to an unbalanced force of 500N. Calculate the mass of the car.
2. A boat of mass 2000kg is propelled forward due to an unbalanced force of 6500N. Calculate the acceleration of the boat.
3. If a 2kg block is pulled with a force of 10N and friction is 2N
a. What is the size of the unbalanced force?
b. What is the blocks acceleration?
4. Two girls push a car of mass 1000 kg. Each pushes with a force of 100 N and the force of friction is 120 N. Calculate the acceleration of the car.
5. A boat engine produces a force of 10000 N and the friction and water resistance total 3500 N. If the mass of the boat is 2000 kg, what will be its acceleration?
What is the potential energy of 800-kg elevator at the top of a 380 meter tall building?
A force parallel to the x-axis applied to an object varies according to the linear graph (a straight line 45° of the x axis). Calculate the work done by the force when the object moves from x = 0 to x = 10. Find the equation of the line (F vs x) where F is the y-axis.
