What would be the maximum acceleration when this truck was towing.Ģ1) Three boxes in contact rest side-by-side on a smooth, horizontal floor. A horizontal force of 100 N is applied to the block giving rise to an.ġ1) On its own, a certain tow-truck has a maximum acceleration of 3.0 m/s2. The pulleys and the strings attached to the.ġ) A block lies on a horizontal frictionless surface. The force the box exerts on the.ġ1) Two objects, each of weight W, hang vertically by spring scales as shown in the figure. ĥ1) The components of vector are Bx = -3.5 and By = -9.7, and the components of vector are Cx = -6 and.ġ) You swing a bat and hit a heavy box with a force of 1500 N. The ball is spun in a circle with a radius 2.00.Ĥ1) Vectors and are shown in the figure. Just as the pebble returns to the level from which it was launched, its distance from the front of the cart is closest toģ1) A ball is tied to the end of a cable of negligible mass. A small pebble is launched from the front of the cart with a velocity of 8.00 m/s at 60.0° above the horizontal as measured relative to the cart (see figure) and experiences no significant air resistance. What is the airspeed of the plane, assuming it is the same in both directions?ģ0) A cart is moving with a constant horizontal velocity of 5.00 m/s. The trip from B to A takes 65 min less than the trip from A to B. On the return trip from B to A, the wind velocity is unchanged. From A to B, the plane flies into a 65 mi/h headwind.
In what direction (relative to north) should she swim to make the crossing along a straight line between the two cities?Ģ9) A plane flies directly between two cities, A and B, which are separated by 2300 mi. An ocean current flows through the Strait of Juan de Fuca from west to east at 3.0 km/h. She wishes to try to swim from Port Angeles, Washington, directly north to Victoria, British Columbia, a distance of 50 km. At what rate does the river flow? The angle θ is measured from the river bank (directly upstream is θ = 0° while directly across the river is θ = 90°.)Ģ8) A long-distance swimmer is able to swim through still water at 4.0 km/h. You find that you can do this if you swim at an angle of θ = 28° from the upstream direction at a constant rate of 1.5 m/s relative to the water. If the acceleration of the current is 0.750 m/s 2, what will be the new velocity of the boat after 33.5 s?Ī) 25.3 m/s at 82.4° from initial direction of motionī) 25.3 m/s at 7.59° from initial direction of motionĬ) 640.1 m/s at 82.4° from initial direction of motionĭ) 640.1 m/s at 7.59° from initial direction of motionĢ7) You want to swim straight across a river that is 76 m wide. (a) How fast can she swim in still water?Ģ6) A small boat is moving at a velocity of 3.35 m/s when it is accelerated by a river current perpendicular to the initial direction of motion. The velocity of the plane relative to the ground isĪ) 157 m/s at an angle 7.31° south of east.ī) 157 m/s at an angle 7.31° east of south.Ĭ) 155 m/s at an angle 7.36° south of east.ĭ) 155 m/s at an angle 7.36° east of south.Į) 157 m/s at an angle 7.36° south of east.Ģ5) A swimmer heading directly across a river 200 m wide reaches the opposite bank inĦ min 40 s, during which time she is swept downstream 480 m? A 20.0 m/s wind is blowing southward while the plane is flying. If a constant wind blows at 10.0 m/s due west during the flight, what direction must the plane fly relative to north to arrive at the destination?Ģ4) A plane has an eastward heading at a speed of 156 m/s (relative to the air). The plane flies with an air speed of 120 m/s.
The destination is directly north of the origination of the flight. If the kit descends with a constant vertical acceleration of 5.82 m/s 2 how far away from the survivor will it hit the waves?Ģ3) An airplane flies between two points on the ground that are 500 km apart. Because of the shape of the parachute, it experiences insignificant horizontal air resistance. If the acceleration during the stall is 9.8 m/s 2 directly downward, the stall lasts 5.0 s, and the plane was originally climbing at 25° to the horizontal, what is the velocity after the stall?Ģ2) A rescue plane flying horizontally at 72.6 m/s spots a survivor in the ocean 182 m directly below and releases an emergency kit with a parachute. 21) A plane flying at 70.0 m/s suddenly stalls.
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