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Find the initial and final velocities in ft/s of a ball thrown vertically upward that returns to the thrower 3 s later ?
To burn the fats she accumulated during the enhanced quarantine time, Inday walks south at a speed of 3 m/s for 10 minutes. She then turns around and walks north a distance 1000 m in 5 minutes. What is her total distance covered?
a. 2,800 m
b. 11,800 m
c. 300,000 m
d. 2,030 m
A certain pendulum has a period of 1.7s on Earth. What is the period of this pendulum on a planet that has a gravitational acceleration of 15m/s 2.
The train moved from the origin evenly at a speed of 36 km/h, after which, at a point with a coordinate of 1500 m, it began to move with an acceleration of 0.01 m/s2 for 30 minutes. What path has the train traveled since the beginning of the movement?
1. A 15kg block of wood is at the top of the table. What is the normal force exerted by the table on the block?
a. 741N c. 1.53N
b. 147N d. 24.8N
Suppose that the net external force
(push minus friction) exerted on a
lawnmower is 51 N (about 11 lb)
parallel to the ground. The mass of
the mower is 24 kg. What is its
acceleration?
Two charges q1 = 4microC and q2 = -7 microC by 3.5m and 1.5m. Calculate the electric potential at point B having a distance of 2m.
An ocean dwelling dinosaur has an estimated body volume of 1.38 x 106 cm3 and a mass of 1.24 x 106 g. What is its
density?
A block of mass 4kg is on the point of slipping down a plane inclined at an angle of 30° to the horizontal.What force parallel to the plane will just move it up the plane?
An electric dipole consists of two equal but unlike charges separated by a distance. Two point charges, q1 = +4.5 x 10-6 C and q2 = -4.5 x 10-6 C, are separated by 6.4 x 10-2 m, forming an electric dipole as shown in the figure. Find the electric field halfway between the dipole.
