(Q.7) A helicopter is rising straight up in the air. Its distance from the ground t seconds after takeoff is s(t) feet, where s(t) = 2t^2 + 4t.
(a) how long will it take for the helicopter to rise to 16 feet? _________ (Answer).(b) Find the velocity and acceleration of the helicopter when it is 16 feet above the ground? ___________ (Answer).
Falling objects drop with an average acceleration of 9.8 m/s2 . If an object falls from a tall building, how long will it take before it reaches a speed of 49 m/s?
a cube of aluminium has sides of length 2cm and a mass of 21.6g what is its density in g/cm3
please answer asap
A 70-kg circus performer is fired from a cannon that is elevated at an angle of 35° above the horizontal.
A 70-kg circus performer is fired from a cannon that is elevated at an angle of 35° above the horizontal. The cannon uses strong elastic bands to propel the performer, much in the same way that a... more
The human eye is sensitive to blue light having a frequency of about 6.4 1014 Hz (a wavelength of about 475 nm). What is the energy in joules of the photons associated with this light? J
If an electrical component with a resistance of 62 Ω is connected to a 115-V source, how much current flows through the component? A
A rocket takes off from a height of 20 feet with an initial velocity of 170 feet per second. The equation that models the path that the rocket takes is: G(x) = –16t2 + 170t + 20
When will the rocket reach the round?
in the book and then there were none How does Agatha Christie build suspense in chapters 12-14
A constant net force of 1325 N gives a toy rocket an acceleration of 2.8 m/s2. What is the mass of the rocket? kg
Another question What is the weight in newtons of a 202 g package of breakfast cereal? N
Work done and Speed
A 0.50-kg block falls vertically onto an initially uncompressed vertical (massless) spring whose force constant equals 20 N/m. The speed of the block equals 2.0 m/s when it first contacts the... more
5.0 kg wooden box is sitting on a wooden table
A 5.0 kg wooden box is sitting on a wooden table (the coefficients for wood on wood are µs = 0.4 and µk = 0.2). a. What is the weight of the box?b. Assuming no vertical forces lifting up or pushing... more
Algebraic expression question
Translate the following verbal statement into an algebraic expression.Use x for your variable.The product of three less than a number and six less than the number.
Minimum force would be
What minimum force would be required to get a 25 kg chunk of wood moving if it is sitting on wood (the coefficients for wood on wood are µs = 0.4 and µk = 0.2)?
What is the minimum take off speed he needs to reach in order complete this dazzling feat?
Evil Knevil is attempting to ride his motorcycle off a 15m high horizontal platform and clear a row of monster trucks extending 12m out from its base.
What minimum force would be required to get a 25 kg chunk of ice moving if it is sitting on ice (for ice on ice µs = 0.1 and µk = 0.03)
A Chevy truck with mass of 1850 kg is rolling along a level roadway at +0.620 m/s. A rope is attached to the rear of the truck and Benjamin applies 265 N of force to the rope to stop the truck... more
What is the acceleration of the block?
A 5 kg block experiences two external forces acting on it simultaneously. Force A has a magnitude of 5 N and points in the positive direction. Force B has a magnitude of 25 N and points in the... more
Find the solution in quadrant IV for 5 + sin(15x) = 4.29. θ>0
5 + sin(15x) = 4.29. θ>0
What is the unit price (in dollars) at that level of demand?
What is the rate of change of the unit price (in dollars per 1,000 lamps) when the quantity demanded is 4,000 units (x = 4)?$ 1. per 1,000 lamps
In an effort to woo his lady love with a daring stunt, a redheaded delivery boy leaps off of a 12m building into a large, 4 meter tall vat of strawberry pudding.
In an effort to woo his lady love with a daring stunt, a redheaded delivery boy leaps off of a 12m building into a large, 4 meter tall vat of strawberry pudding. After an eager sprint, he runs... more
A speedboat leaves port pointed due East at 80 knots (150 km/h). The ocean in this region has a northward current of 4.00m/s
A speedboat leaves port pointed due East at 80 knots (150 km/h). The ocean in this region has a northward current of 4.00m/s a. What are the components of the boat’s velocity vector relative to the... more
Is astrology a real science?
Astrology is founded on understanding the positions of the stars, it may seems like a scientific. Believe in astrology varies person to person. I am believing on astrology, it will help us to... more