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1. A speeder passes a stationary police car at 110 km/h. The police car accelerates at 1.25 m/s2. How long does it take the police car to catch up to the speeder? How fast is the police car going when it does catch up?
2. A football player is running for the end zone at a constant speed of 8.00 m/s. A player on the defence chases the 1st player, starting at a speed of 5.50 m/s and accelerating at 0.80 m/s2. If both players start at the half-way line (46.00 m from the end zone), will there be a touchdown or will the player get tackled?
3. A is travelling at 20 m/s. 80 m ahead is B, stopped. A wants to catch B so accelerates at 4.0 m/s2. B does not want to caught, so begins to accelerate away from A at 6.0 m/s2. . Will A catch B? If so where? If not, what was the time of closest approach?
Two forces, F? 1 and F? 2, act at a point, as shown in the picture. (Figure 1) F? 1 has a magnitude of 9.20 N and is directed at an angle of α = 60.0 ° above the negative x axis in the second quadrant. F? 2 has a magnitude of 6.40 N and is directe..
you lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. the ray reflects from
An astronomer is making an observation of a new-discovered galactic object. Part of this observation is the study of the light emitted by the object. It is observed that this light includes a clear pattern of the emission spectrum of atomic hydrogen
A piano string with a length of 1.15-m and a mass of 20.0-g isunder a tension of 6.30×10^3 N. What are the frequencies of the next two harmonics
A skyrocket explodes just as it reaches the top of its trajectory at a height 1.31 km above the ground. With what speed was the shrapnel ejected by the explosion
A conductor in the shape of a spherical shell of radii 2,5cm is charged to 20 microcoloumbs. How much work is required to move a 10 microcoloumb charge from the position (0.20) to the point (10,10)
Vo = 94 m/s at 50 degrees above the X-axis and a 20 degree inclined plane. You are to find the x value the projectile hits the plane with an accuracy to 0.1 seconds
A block of mass m1 = 1.75 kg and a block of mass m2 = 5.90 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.250 m and mass M = 10.0 kg. These blocks are allowed to move on a fixed block-wedge of ..
Two point particles of charge Q1 = 48 µC and Q2 = 86 µC are found to have a potential energy of 41 J. What is the distance between the charges
A single slit has aperture width 4.54 μm and lies 14.9 cm from a screen. If light of wavelength 420 nm falls on the slit, find the width of the central maximum in centimeters
Pitcher throws 0.15kg baseball. What is the approximate speed of the pitch, if force exerted by pitcher is 30N
Assume that you wish to fabricate a uniform wire out of 0.850 gram of copper. Determine what will be the diameter of the wire
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