Search & Filtering
A 1200kg car going 30m/s applies its brakes and skids to rest. If the friction force between sliding tiresband pavement is 600N. How far does the car skids before coming tonrest.
A 500 kg roller coaster is pulled to the top of a hill 45 m high and arrives at the top with a zero speed.
a) how much work has done by the vhain to pull the car to the top?
b) how much potential energy does it have at the top?
c)What is the total energy of the system?
d) how much kinetic energy does it have at the bottom?
A 25 kg child is sitting on a 10 kg sled. The child’s older sister is pulling the sled horizontally across the snow at a constant speed of 4 m/s by pulling on a rope with a force of 25 N at an angle of 30o above the horizontal.
[4] a. Draw all appropriate diagrams for the situation.
[3] b. Find the normal force acting on the sled.
[3] c. Find the magnitude of the force of friction between the sled and the snow.
You are on the south side of a river that is 100m wide and flowing at 2m/s towards the east. Your boat can travel at 5m/s relative to the water. You want to land your boat on the north shore of the river at a point that is 80m [W] of your original position.
[3] a. Draw and label a diagram of the situation.
[2] b. What direction should you head in order to reach your destination?
[3] c. How long does the trip take?
A plane is flying so that its velocity with respect to the air is 200km/h [E]. The wind is blowing at 50km/h [N].
[3] a. What is the velocity of the plane with respect to the ground (include a diagram)?
[2] b. If the trip takes a total of 2h, what is the distance and direction of the destination city from the starting position?
when you switch your room fan from medium to high speed, the blades accelerate at 1.2 radians per second squared for 1.5s. if the initial angular speed of the fan blades is 3.0 radians per second, what is the final angular speed of the fan blades in radians per second?
a baseball is thrown straight upward with a speed of 30 m/s. (a) How long will it rise? (b) How high will it rise? (c) How long after it leaves the hand will it return to the starting point? (d) When will its speed be 16 m/s?
An object moving at 13 m/s slows uniformly at the rate of 2.0 m/s each second for a time of 6.0 s. Determine (a) its final speed, (b) its average speed during the 6.0 s, and (c) the distance moved in the 60 s. Ans. (a) 1.0 m/s; (b) 7.0 m/s; (c) 42 m
a car slows down at -5.00m/s squared comes to a stop after 15 m what was the initial speed of the car.
FIND THE MAGNITUDE AND DIRECTION OF THE RESULTANT OF THE GIVEN SET OF VECTORS USING PYTHAGOREAN THEOREM.
VECTOR 1: 12 NEWTONS, SOUTH
VECTOR 2: 10 NEWTONS, WEST
#339914 on Dec 2023