39 - A boat on the shore wants to cross the 20 m wide river perpendicular to the current at 4 m / sec. Since the current velocity is 3 m / sec, how far from the point it wants to reach the shore? A) 25 B) 5 C) 20 D) 15 E) 10

Q: 23. Compared to the range of a bullet shot horizontally just above horizontal ground, a bullet shot…

A: Horizontal range of bullet depends on time of flight of bullet and horizontal velocity of bullet .

Q: A football player kicked a football giving it an initial velocity of 26 m/s. The football leaves the…

A:

Q: A football player kicked a football giving it an initial velocity of 27 m/s. The football leaves the…

A:

Q: An automobile driver travelling northeast at 34.6km/h notices that the wind appears to be coming…

A: Given that: When, v1=34.6 km/hr= 34.6 ×518=9.61 m/s   towards north-eastLet the magnitude of wind…

Q: A swimmer who can consistently keep the same pace to cover 50 meters in 8.41 seconds sets out to…

A: Given: Speed of current of river vrg=2.94 m/s Swimmer maintain pace to cover 50 m. in 8.41 s.

Q: 6) An F-35 missile is fired toward an enemy aircraft 20 miles away at 52° above horizontal as shown…

A: We have to make the component of the velocities X-component of velocity…

Q: 22: A particle is thrown at an angle of 30° with velocity of 36 kmph calculate its time of flight…

A: Launch angle , α = 30 ° Launch velocity , V = 36 km /hr V = 36 x 1000 m3600 seconds= 10 m/s  To find…

Q: A car travels along a horizontal circular curved road that has radius of 600 m. If the speed is…

A: The radius of the curved road is R = 600 m = (600 x10-3) km = 0.6 km. The tangential acceleration of…

Q: 3. Starting at the island of Moi in an unknown archipelago, a fishing boat makes a round trip with…

A:

Q: A boat's velocity, measured in meters per second, is described by vector 6= (3,-4). In two or more…

A: Given Velocity of boat described by vector ,b→=3,-4

Q: 5. A golfer hits the ball and manages to get the ball into the hole that was 150 m away. When the…

A:

Q: A football is kicked off the ground in a game. If the ball reaches a maximum height of 10 m, when…

A: The initial speed is, H=v2sin2θ2g10=v2sin24029.8v=21.78 m/s

Q: The Gulf Stream can flow as fast as 3.6 m/s directly north. A ship in the current has a cruising…

A: Given:    Velocity of river, v1 = 3.6 m/s (North)   Speed of ship, v2 = 10 m/s  To determine the…

Q: 5. Categorize each of the following quantities as either a scalar (S) or a vector (V) The time it…

A: All the physical quantities are basically categorized into two main families that is : A) Scalars B)…

Q: A river is flowing from west to east at a speed of 10.0 km/h. A boat’s speed in the water is 20.0…

A:

Q: A swimmer who can consistently keep the same pace to cover 50 meters in 7.71 seconds sets out to…

A: The height h=50m  Time t=7.71s  To find the actual speed of the swimmer

Q: Gordon likes to take his dog for a walk on the beach each morning. The beach near his home is quite…

A: Solution:The law of triangles is given as:asin A=bsin B=csin C     -1where, a, b and c are the sides…

Q: Determine the time of ascent if the initial speed is Vo and the acceleration due to gravity is 1/2…

A: Let the vertically upward direction of motion is considered as the motion’s positive direction. The…

Q: 27. What can you infer from the statement, Velocity of an object is zero? * Object is in linear…

A: Determine the significance of zero velocity. 1st option says the object has a constant velocity that…

Q: A golf ball was hit and follows a trajectory path. It travels 28m/s upon hitting at 400 with respect…

A: 1. The maximum height reached by the ball above the ground can be determined as, Here, u, g and θ…

Q: A car is driving on a circular track with a radius of 1 (km). In the point in south (sin((3π)/2)) on…

A:

Q: Brownie, a dog, running at a constant speed of 1.36 m/s decided to run towards the center of the…

A: a) The situation is shown in the below diagram.

Q: a kicker punts a football from the very center of the field to the sideline 37 yards downfield. a…

A: Given data The sideline is, s=37 yards The width is, w=53 yards Step 1 The centre of the field is,

Q: A football player kicked a football giving it an initial velocity of 45.2 m/s. The football leaves…

A:

Q: A child walks due east on the deck of a ship at 2 miles per hour. The ship is moving north at a…

A: Given: speed of child on deck of ship vc = 2 miles/hr  (towards east) speed of ship vs = 8 miles/hr…

Q: 55. A NASA astronaut hits a golf ball on the Moon. Which of the following quantities remain constant…

A: Given:-  A NASA astronaut hits a golf ball on the Moon. Which of the following quantities remain…

Q: 10. If you are driving a car down the street, which would be a good reference point? the tires of…

A: a mailbox.

Q: 37. A NASA astronaut hits a golf ball on the Moon. Which of the following quantities remain constant…

A: First of all, hitting a golf ball on the moon and on the earth is same , only the thing that chnage…

Q: 51. You accidentally throw your car keys horizontally at 8.0 m/s from a cliff 64-m high. How far…

A: Given ;  Height of cliff ( y ) = 64 m It would take a time of t seconds , for the keys to reach the…

Q: - 32 - 5y and A = + |Ã + B = Direction in degrees relative to + a - b. A - B = + ||Ã – B| =…

A:

Q: 71. ••Marcus and Cody want to hike to a destination 12 km north of their starting point. Before…

A:

Q: A woman leaves home and drives to a store located 7.00 km away in a direction 30.0° north of east.…

A:

Q: A person shoots an arrow at an angle of 60 degrees above the horizon, where the arrow is 1.8 meters…

A: 1) Apply the second kinematic equation in the horizontal plane.

Q: 11. A dolphin leaps out of the water at an angle of 30° above the horizontal. The horizontal…

A: Solution:- Given data,  A dolphin leaps out of the water at an angle of 30°,  And the horizontal…

Q: A swimmer who can consistently keep the same pace to cover 50 meters in 6.8 seconds sets out to swim…

A: The resultant speed of swimmer with respect to river is, vsr=506.8vsr=7.35m/s

Q: A fast-pitch softball player pitches the ball horizontally at 22.4 0.67 m above the ground. Assuming…

A: Given: Velocity v = 22.4 ms Height h = 0.67 m To determine: Horizontal distance before reaching the…

Q: A ball, rolling with velocity 3 m/s, rolls off a cliff. The cliff ledge is 70 m above the ground…

A:

Q: 2. A ball is thrown with 50m/s at angle of projection 37°. Final initial and final velocity in…

A:

Q: 1. State whether the following quantities are scalars or vectors and discuss into 2-3 sentences: a.…

A: To classify : the following quantities as scalars or vectors

Q: A kid kicks a ball in such a way that the successive displacement of the ball are 6.00 m to the…

A: The situation is shown in the diagram below.

Q: Suppose a ship heads directly north away from the docks in a harbor at a speed of 3.40 km/h. After…

A: Given:- Harbor speed  Vs=3.40 km/h y1=1.10 km/h harbor moving =3 km/h (due to west) time (t)= 1 h…

Q: Gordon likes to take his dog for a walk on the beach each morning. The beach near his home is quite…

A: Given: We are given that  Gordon parks his car at point C ( 34 degrees W of S ) of point where the…

Q: Two cruise ships travel away from the Miami Harbor. The Disney ship is traveling to its own private…

A: Analyze the diagram of the given situation.

Q: 4. A ship is traveling due East at 10km/hr. What must be the speed of a second ship heading 30…

A:

Q: A football player kicked a football giving it an initial velocity of 27 m/s. The football leaves the…

A:

Projectile Motion