The position of a moving 650-g particle is given by 7 = (2t2 +t)i + (7t² – t+4)j+ (2t³ – 4)k. Here 7 is in meters and t in seconds.  (a) What is the particle's initial velocity?  (b) What is the displacement of the particle when t = 1.7 s?  (c) What is the net force acting on the particle at that time?

Q: Two balls are thrown vertically, both with an. initial speed of 15 m/s from height of 6 m above the…

A: Given data: The initial speed of both balls, v=15 m/s Height of both balls, h=6 m

Q: 2. A 40-lb suitcase has an initial velocity down the ramp of va = 20 ft/s and the coefficient of…

A: in this  question  we use  equation of motion and free body diagram  equation.

Q: In 1992, a 14 kg meteorite struck a car in Peekskill, NY, leaving a 20-cm-deep dent in the trunk.…

A: The specific equation of motion you use depends on the nature of the motion and the forces involved.…

Q: 0 Consider an object sliding down a frictionless ramp that is inclined an angle above the…

A:

Q: A force of 3.6 N acts towards the East on an object with mass m = 2.0 kg, while simultaneously a…

A:

Q: A dated box of dates, of mass 5.8 kg, is sent sliding up a frictionless ramp at an angle of 0 to the…

A:

Q: When installing a Red Carpet for the Oscars, workers found that if they push the carpet roll (image…

A:

Q: A 50.0 kg man standing on a spring scale takes a descending elevator ride (DOWNWARD). Starting from…

A:

Q: A 300 N block is pushed along a surface If it takes 120 N to get the block moving and 75 N to keep…

A: Solution- weight of block W=300 N                  Force to get the block moving F=120 N…

Q: A car traveling at 20 m/s runs into a bridge abutment and crumples for 1.2 m before coming to a full…

A: Given: The intial speed of the car is 20 m/s. The distance traveled by car is 1.2 m. The final speed…

Q: The graph below shows the acceleration vs, time for an object. Choose the correct corresponding…

A:

Q: Determine the stopping distance for a skier moving down a slope with friction with an initial speed…

A:

Q: Io, a satellite of Jupiter, is the most volcanically active moon or planet in the solar system. It…

A: Acceleration due to gravity on lo (g') = 1.81 ms2Let the mass of fragment = m

Q: A 10kg object falls and experiences a drag force which is proportional to the square of the veloc-…

A:

Q: An object of mass m is at rest at the top of a smooth slope of height h and length L. The…

A: To find the object's final speed by the theorem of work energy. There is a working of two forces…

Q: A rocket with a mass of 1 ton is launched vertically. Its initial speed at T = 0 is 1200 km/h, its…

A: We are given mass of rocket. We are also given air friction acting on it. We first find the net…

Q: A shell is fired from a fixed artillery gun with an initial speed u such that it hits the target on…

A:

Q: What will be the velocity of the ski jumper at position B if she starts from rest at position A?…

A:

Q: The spring k = 20N/m is unstretched when s = 0. The 5-kg cart is moved to the position s = -1m and…

A:

Q: Block of mass m=50 g, at rest slide down on inclined plane with angle 0 = 30 how it takes to move…

A:

Q: you go on a trip on Mars. You toss a coin from an initial height of 0.855 m (about waist height)…

A:

Q: Under what circumstances is the effect of air resistance negligible on a falling object? i.e. When…

A: Usually the force due to air resistance on a falling object is given by   F = 12ρACv2   ρ = density…

Q: A plane flies 180 miles south, then 170 miles east and finally 250 miles north. What is the…

A:

Q: The coefficient of sliding friction between the tires of a car and the road surface is u = 0.5. The…

A:

Q: A 7-kg toboggan is kicked on a frozen pond, such that it acquires a speed of 2.1 m/s to the right.…

A: Given Mass of the toboggan is m=7 kg Initial speed of the toboggan is v0=2.1 m/s Final speed of the…

Q: A ball of mass m is shot straight up into the air with an initial speed Vị.

A:

Q: The 1.5 Mg = 1,500 kg sports car has a tractive force of F = 4.5 kN = 4,500 N. If it produces the…

A: The mass of the car, m=1500kg The tractive force, F=4500 N The velocity of the car, v=-0.05t2+3t m/s

Q: In the figure, a body with a mass of 2 kg moves under the influence of two constant forces F1 = 5N…

A:

Q: A toy car of mass m is on a level table that is a height h above level ground. While on the table, a…

A: Basic concept of equation of motion: We always use equation of motions to determine final velocity…

Q: Problem 2: A runaway train has a mass of 1.5 × 104 kg and a speed of 5 m/s. How much time does it…

A:

Q: On a particle of mass m = 20 g, act three forces F1, F2 and F3 on the paper plan. The forces F2 = 4…

A: According to Newton's Second law of motion The net force on an object is given by Where m = mass of…

Q: Help

A:

Q: A car travels in a straight li.e on a flat road with a constant acceleration of 3m/s2. A ball is…

A:

Q: Computation. A rocket, with a mass of 1.8 x 104 kg, blasts off from earth with a uniform upward…

A:

Q: You are trying to escape a hoard of zombies and must make an elevator to get down a cliff as fast as…

A: vmax = 10 m/s h = 25 m acceleration (a) = 2 ms2m2 = 100 kg

Q: The small mass m = 3.5 kg and big mass M = 5.8 kg are initially at rest with the small mass at the…

A: The law of conservation of energy states that the total energy of an isolated system shall remain…

Q: Two horizontal forces, P and Q, are acting on a block that is placed on a table. We know that P =…

A: Given: The mass of the object is 5.1 kg. P→=-2.1i^+4.25k^ N The velocity of the object is constant.

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.